diff --git a/bms-back/bms-admin/src/main/resources/i18n/messages.properties b/bms-back/bms-admin/src/main/resources/i18n/messages.properties
index 140ebd22..fe2ceafc 100644
--- a/bms-back/bms-admin/src/main/resources/i18n/messages.properties
+++ b/bms-back/bms-admin/src/main/resources/i18n/messages.properties
@@ -205,6 +205,7 @@ price.bill.fee.idRequired=费用ID不能为空
 
 price.set.version.effectiveTime.empty=版本生效时间不能为空
 price.set.version.effectiveTime.beforePrev=生效时间不能早于上一版本的生效时间
+price.set.version.effectiveTime.hitBoundary=生效时间不能与已有版本的生效时间或失效时间相同
 price.set.version.notExists=套餐版本不存在
 price.set.version.activate.statusNotAllowed=仅草稿或待生效版本可设置生效时间
 price.set.version.delete.statusNotAllowed=仅草稿、待生效或已生效版本可删除
diff --git a/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcPriceSetServiceImpl.java b/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcPriceSetServiceImpl.java
index dc84b7b4..399fea03 100644
--- a/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcPriceSetServiceImpl.java
+++ b/bms-back/bms-system/src/main/java/com/bms/price/service/impl/PrcPriceSetServiceImpl.java
@@ -401,10 +401,20 @@ public class PrcPriceSetServiceImpl implements IPrcPriceSetService
         {
             throw new ServiceException(MessageUtils.message("price.set.edit.stopped"));
         }
-        Date prevEffective = findPrevVersionEffectiveTime(version);
-        if (prevEffective != null && effectiveTime.before(prevEffective))
+        boolean importFresh = "IMPORT_FRESH".equalsIgnoreCase(StringUtils.trim(version.getPriceBuildMode()));
+        if (importFresh)
         {
-            throw new ServiceException(MessageUtils.message("price.set.version.effectiveTime.beforePrev"));
+            // May start inside a prior version window; forbid equal to any other version's eff/exp.
+            // refreshVersionStatus then sets B.expire=A.eff, A.expire=B.oldExpire and syncs children.
+            validateImportFreshActivateTime(version, effectiveTime);
+        }
+        else
+        {
+            Date prevEffective = findPrevVersionEffectiveTime(version);
+            if (prevEffective != null && effectiveTime.before(prevEffective))
+            {
+                throw new ServiceException(MessageUtils.message("price.set.version.effectiveTime.beforePrev"));
+            }
         }
         // Set schedule; refreshVersionStatus decides PENDING(3) vs EFFECT(1) and chains expire_time
         version.setEffectiveTime(effectiveTime);
@@ -415,6 +425,41 @@ public class PrcPriceSetServiceImpl implements IPrcPriceSetService
         return 1;
     }
 
+    /**
+     * IMPORT_FRESH activate: allow effective time earlier than prev-by-seq (incl. inside prior window B).
+     * Must not equal any other timed version's effectiveTime or expireTime.
+     */
+    private void validateImportFreshActivateTime(PrcPriceSetVersion version, Date effectiveTime)
+    {
+        if (version == null || version.getPriceSetId() == null || effectiveTime == null)
+        {
+            return;
+        }
+        PrcPriceSetVersion q = new PrcPriceSetVersion();
+        q.setPriceSetId(version.getPriceSetId());
+        q.setPriceType(com.bms.price.domain.PriceType.SALES);
+        List<PrcPriceSetVersion> list = versionMapper.selectPrcPriceSetVersionList(q);
+        if (list == null || list.isEmpty())
+        {
+            return;
+        }
+        for (PrcPriceSetVersion v : list)
+        {
+            if (v == null)
+            {
+                continue;
+            }
+            if (version.getPsvId() != null && version.getPsvId().equals(v.getPsvId()))
+            {
+                continue;
+            }
+            if (sameTime(v.getEffectiveTime(), effectiveTime) || sameTime(v.getExpireTime(), effectiveTime))
+            {
+                throw new ServiceException(MessageUtils.message("price.set.version.effectiveTime.hitBoundary"));
+            }
+        }
+    }
+
     /** Previous version (lower version_seq) effective_time; null if none. */
     private Date findPrevVersionEffectiveTime(PrcPriceSetVersion version)
     {
diff --git a/bms-front/src/views/price/set/components/create/StepDetails.vue b/bms-front/src/views/price/set/components/create/StepDetails.vue
index 9a42c765..3cddc5f8 100644
--- a/bms-front/src/views/price/set/components/create/StepDetails.vue
+++ b/bms-front/src/views/price/set/components/create/StepDetails.vue
@@ -58,6 +58,7 @@
           <div class="build-card__desc">按产品库基础价生成套餐产品列表，可再导入 Excel 修改价格</div>
         </button>
         <button
+          v-if="showImportInherit"
           type="button"
           class="build-card build-card--import"
           :class="{ selected: isImportBuildMode(priceBuildMode) }"
@@ -247,7 +248,12 @@ const props = defineProps({
   /** True when build mode changed locally and not saved yet */
   buildModeDirty: { type: Boolean, default: false },
   /** False while parent still loading package data — avoid first click being wiped by applySetData */
-  buildModeReady: { type: Boolean, default: true }
+  buildModeReady: { type: Boolean, default: true },
+  /**
+   * Show「按上一版 Excel 建价」(IMPORT). Hidden for brand-new package create
+   * (no prior version); keep for newVersion / copy / edit.
+   */
+  showImportInherit: { type: Boolean, default: true }
 })
 
 const emit = defineEmits(['update:psvId', 'update:priceBuildMode', 'update:pefId'])
diff --git a/bms-front/src/views/price/set/components/detail/SetVersionDetailDrawer.vue b/bms-front/src/views/price/set/components/detail/SetVersionDetailDrawer.vue
index 8b6078e0..cd704cc8 100644
--- a/bms-front/src/views/price/set/components/detail/SetVersionDetailDrawer.vue
+++ b/bms-front/src/views/price/set/components/detail/SetVersionDetailDrawer.vue
@@ -173,7 +173,8 @@ const noneSc = '无'
 const isFixed = computed(() => isFixedType(props.setType))
 const title = computed(() => {
   const v = props.version || {}
-  return (v.versionNo || '-') + ' · 版本明细'
+  const eff = v.effectiveTime || '未设置生效时间'
+  return eff + ' · 版本明细'
 })
 const detailTitleText = computed(() => {
   const p = activeProduct.value || {}
diff --git a/bms-front/src/views/price/set/components/detail/SetVersionTable.vue b/bms-front/src/views/price/set/components/detail/SetVersionTable.vue
index 320c19f6..3f3be07e 100644
--- a/bms-front/src/views/price/set/components/detail/SetVersionTable.vue
+++ b/bms-front/src/views/price/set/components/detail/SetVersionTable.vue
@@ -19,13 +19,10 @@
     </el-tabs>
 
     <el-table :data="filteredVersions" border empty-text="暂无版本">
-      <el-table-column :label="colNo" width="100">
-        <template #default="{ row }">
-          <el-button link type="primary" @click="openDetails(row)">{{ row.versionNo || '-' }}</el-button>
-        </template>
-      </el-table-column>
       <el-table-column :label="colEff" min-width="170">
-        <template #default="{ row }">{{ row.effectiveTime || '-' }}</template>
+        <template #default="{ row }">
+          <el-button link type="primary" @click="openDetails(row)">{{ row.effectiveTime || '未设置' }}</el-button>
+        </template>
       </el-table-column>
       <el-table-column :label="colExp" min-width="170">
         <template #default="{ row }">{{ row.expireTime || '-' }}</template>
@@ -90,7 +87,6 @@ const props = defineProps({
 const emit = defineEmits(['update:modelValue', 'create-version', 'open-details', 'view-import-attach', 'activate', 'reschedule', 'edit', 'remove'])
 
 const title = '套餐版本'
-const colNo = '版本号'
 const colEff = '生效时间'
 const colExp = '失效时间'
 const colStatus = '状态'
@@ -121,10 +117,33 @@ function tabLabel(key) {
 
 const hasDraft = computed(() => (props.versions || []).some(v => isDraftVersion(v)))
 
+function toEffMs(v) {
+  if (!v || !v.effectiveTime) return NaN
+  const t = new Date(String(v.effectiveTime).replace(/-/g, '/')).getTime()
+  return Number.isNaN(t) ? NaN : t
+}
+
+/** Sort by effective time descending; drafts without time last. */
+function sortByEffectiveTime(list) {
+  return (list || []).slice().sort((a, b) => {
+    const ta = toEffMs(a)
+    const tb = toEffMs(b)
+    const aNull = Number.isNaN(ta)
+    const bNull = Number.isNaN(tb)
+    if (aNull && bNull) return (Number(b.versionSeq) || 0) - (Number(a.versionSeq) || 0)
+    if (aNull) return 1
+    if (bNull) return -1
+    if (tb !== ta) return tb - ta
+    return (Number(b.versionSeq) || 0) - (Number(a.versionSeq) || 0)
+  })
+}
+
 const filteredVersions = computed(() => {
   const list = props.versions || []
-  if (statusTab.value === 'all') return list
-  return list.filter(v => String(v.status) === statusTab.value)
+  const filtered = statusTab.value === 'all'
+    ? list
+    : list.filter(v => String(v.status) === statusTab.value)
+  return sortByEffectiveTime(filtered)
 })
 
 function detailCount(row) {
diff --git a/bms-front/src/views/price/set/create.vue b/bms-front/src/views/price/set/create.vue
index df56f312..33e36eb0 100644
--- a/bms-front/src/views/price/set/create.vue
+++ b/bms-front/src/views/price/set/create.vue
@@ -22,6 +22,7 @@
         :live-persist="livePersist"
         :build-mode-dirty="buildModeDirty"
         :build-mode-ready="pageReady"
+        :show-import-inherit="showImportInherit"
         :header-title="detailsHeaderTitle"
       />
     </div>
@@ -82,6 +83,8 @@ const deferPersist = computed(() => copyMode.value || newVersionMode.value)
 const showBasic = computed(() => !deferPersist.value && String(route.query.step || '') !== '2')
 /** Edit existing version: live PUT/pull/import. New create / copy / newVersion: defer until finish. */
 const livePersist = computed(() => !!form.priceSetId && !deferPersist.value)
+/** Brand-new package has no prior version — hide IMPORT inherit card. */
+const showImportInherit = computed(() => newVersionMode.value || copyMode.value)
 
 const detailsHeaderTitle = '编辑产品价格'
 
@@ -382,7 +385,7 @@ function onPriceBuildModeUpdate(mode) {
         proxy.$modal.msgSuccess("已拉取产品列表，可继续编辑价格")
       }).catch(() => {})
     })
-  } else if (mode === 'IMPORT') {
+  } else if (mode === 'IMPORT' && showImportInherit.value) {
     nextTick(async () => {
       // newVersion/copy: wait until loadExisting fills priceSetId
       const qid = route.query.priceSetId
@@ -397,7 +400,7 @@ function onPriceBuildModeUpdate(mode) {
         return
       }
       if (!form.priceSetId) {
-        proxy.$modal.msgSuccess("新建套餐无历史版本可带出，请直接导入 Excel 建价")
+        proxy.$modal.msgSuccess("请直接导入 Excel 建价")
         return
       }
       try {
diff --git a/bms-front/src/views/price/set/detail.vue b/bms-front/src/views/price/set/detail.vue
index e735a9f5..0333c71b 100644
--- a/bms-front/src/views/price/set/detail.vue
+++ b/bms-front/src/views/price/set/detail.vue
@@ -50,9 +50,6 @@
         @closed="onActivateClosed"
       >
         <el-form ref="activateFormRef" :model="activateForm" :rules="activateRules" label-width="100px">
-          <el-form-item label="版本号">
-            <span>{{ activateForm.versionNo || '-' }}</span>
-          </el-form-item>
           <el-form-item label="生效时间" prop="effectiveTime">
             <el-date-picker
               v-model="activateForm.effectiveTime"
@@ -92,7 +89,7 @@ import { usePriceSetRefData } from './composables/usePriceSetRefData'
 import {
   getPriceSet, disablePriceSet, enablePriceSet, activatePriceSetVersion, deletePriceSetVersion
 } from '@/api/price/set'
-import { isDraftVersion, isPendingVersion, isEffectVersion } from './utils/priceSet'
+import { isDraftVersion, isPendingVersion, isEffectVersion, isImportFreshBuildMode } from './utils/priceSet'
 
 const { proxy } = getCurrentInstance()
 const route = useRoute()
@@ -233,8 +230,18 @@ const activateConfirmText = computed(() =>
   activateMode.value === 'reschedule' ? '确认修改' : '确认启动'
 )
 const activatePrevEffectiveTime = ref(undefined)
+const activateIsImportFresh = ref(false)
+/** Other versions' effective/expire times (hour) — forbidden for IMPORT_FRESH */
+const activateBoundaryTimes = ref([])
 const activateEffBeforePrevMsg = '生效时间不能早于上一版本的生效时间'
+const activateEffHitBoundaryMsg = '生效时间不能与已有版本的生效时间或失效时间相同'
 const activateDialogHint = computed(() => {
+  if (activateIsImportFresh.value) {
+    const base = activateMode.value === 'reschedule'
+      ? 'Excel 重新建价：生效时间可落在历史版本区间内，将自动截断该版本失效时间并同步产品/明细。'
+      : 'Excel 重新建价：生效时间可落在历史版本区间内；落在版本 B 区间时，B 失效时间改为本次启动时间，本版本失效时间取 B 原失效时间，并同步双方产品/明细。'
+    return base + '不可与已有版本的生效时间或失效时间相同。'
+  }
   const base = activateMode.value === 'reschedule'
     ? '仅待生效版本可修改；若时间晚于当前仍为待生效，到时自动生效并使上一版本失效。'
     : '若生效时间晚于当前，版本将进入「待生效」；到时自动生效并使上一版本失效。'
@@ -242,20 +249,27 @@ const activateDialogHint = computed(() => {
   if (!prev) return base
   return base + '不得早于上一版：' + prev + '。'
 })
-const activateRules = {
+const activateRules = computed(() => ({
   effectiveTime: [
     { required: true, message: '请选择生效时间', trigger: 'change' },
     {
       validator: (_r, v, cb) => {
+        if (!v) return cb()
+        if (activateIsImportFresh.value) {
+          const ms = toTimeMs(v)
+          if (activateBoundaryTimes.value.some(b => toTimeMs(b) === ms)) {
+            return cb(new Error(activateEffHitBoundaryMsg))
+          }
+          return cb()
+        }
         const prev = activatePrevEffectiveTime.value
-        if (!v || !prev) return cb()
-        if (toTimeMs(v) < toTimeMs(prev)) return cb(new Error(activateEffBeforePrevMsg))
+        if (prev && toTimeMs(v) < toTimeMs(prev)) return cb(new Error(activateEffBeforePrevMsg))
         cb()
       },
       trigger: 'change'
     }
   ]
-}
+}))
 
 function toTimeMs(val) {
   if (val == null || val === '') return NaN
@@ -278,13 +292,30 @@ function findPrevVersionEffectiveTime(row) {
   return prev ? normalizeToHour(prev.effectiveTime) : undefined
 }
 
-function pickActivateDefaultTime(prev) {
+/** Collect other versions' effective/expire hour times (forbidden for IMPORT_FRESH). */
+function collectActivateBoundaryTimes(excludePsvId) {
+  const out = []
+  const seen = new Set()
+  for (const v of set.value.versions || []) {
+    if (!v || v.psvId == null || String(v.psvId) === String(excludePsvId)) continue
+    ;[v.effectiveTime, v.expireTime].forEach(t => {
+      const n = t ? normalizeToHour(t) : ''
+      if (!n || seen.has(n)) return
+      seen.add(n)
+      out.push(n)
+    })
+  }
+  return out
+}
+
+function pickActivateDefaultTime(prev, importFresh) {
   const now = formatNow()
-  if (!prev) return now
+  if (importFresh || !prev) return now
   return toTimeMs(now) >= toTimeMs(prev) ? now : prev
 }
 
 function disabledActivateDate(date) {
+  if (activateIsImportFresh.value) return false
   const prev = activatePrevEffectiveTime.value
   if (!prev || !date) return false
   const prevDay = new Date(String(prev).replace(/-/g, '/'))
@@ -295,13 +326,27 @@ function disabledActivateDate(date) {
 }
 
 function disabledActivateHours() {
-  const prev = activatePrevEffectiveTime.value
   const cur = activateForm.effectiveTime
-  if (!prev) return []
-  const prevD = new Date(String(prev).replace(/-/g, '/'))
   const curD = cur
     ? new Date(String(normalizeToHour(cur)).replace(/-/g, '/'))
     : new Date()
+  if (activateIsImportFresh.value) {
+    const hours = new Set()
+    for (const b of activateBoundaryTimes.value) {
+      const bd = new Date(String(b).replace(/-/g, '/'))
+      if (
+        bd.getFullYear() === curD.getFullYear() &&
+        bd.getMonth() === curD.getMonth() &&
+        bd.getDate() === curD.getDate()
+      ) {
+        hours.add(bd.getHours())
+      }
+    }
+    return [...hours]
+  }
+  const prev = activatePrevEffectiveTime.value
+  if (!prev) return []
+  const prevD = new Date(String(prev).replace(/-/g, '/'))
   if (
     prevD.getFullYear() !== curD.getFullYear() ||
     prevD.getMonth() !== curD.getMonth() ||
@@ -321,30 +366,38 @@ function onActivatePickerVisible(visible) {
   }
 }
 
-function onActivateVersion(row) {
+function openActivateDialog(row, mode) {
   if (!row || row.psvId == null) return
-  activateMode.value = 'activate'
+  activateMode.value = mode
   activateForm.psvId = row.psvId
   activateForm.versionNo = row.versionNo || ''
+  activateIsImportFresh.value = isImportFreshBuildMode(row.priceBuildMode)
   activatePrevEffectiveTime.value = findPrevVersionEffectiveTime(row)
-  activateForm.effectiveTime = pickActivateDefaultTime(activatePrevEffectiveTime.value)
+  activateBoundaryTimes.value = activateIsImportFresh.value
+    ? collectActivateBoundaryTimes(row.psvId)
+    : []
+  const prev = activatePrevEffectiveTime.value
+  if (mode === 'reschedule') {
+    const cur = normalizeToHour(row.effectiveTime)
+    if (activateIsImportFresh.value) {
+      activateForm.effectiveTime = cur || pickActivateDefaultTime(prev, true)
+    } else if (cur && (!prev || toTimeMs(cur) >= toTimeMs(prev))) {
+      activateForm.effectiveTime = cur
+    } else {
+      activateForm.effectiveTime = pickActivateDefaultTime(prev, false)
+    }
+  } else {
+    activateForm.effectiveTime = pickActivateDefaultTime(prev, activateIsImportFresh.value)
+  }
   activateVisible.value = true
 }
 
+function onActivateVersion(row) {
+  openActivateDialog(row, 'activate')
+}
+
 function onRescheduleVersion(row) {
-  if (!row || row.psvId == null) return
-  activateMode.value = 'reschedule'
-  activateForm.psvId = row.psvId
-  activateForm.versionNo = row.versionNo || ''
-  activatePrevEffectiveTime.value = findPrevVersionEffectiveTime(row)
-  const cur = normalizeToHour(row.effectiveTime)
-  const prev = activatePrevEffectiveTime.value
-  if (cur && (!prev || toTimeMs(cur) >= toTimeMs(prev))) {
-    activateForm.effectiveTime = cur
-  } else {
-    activateForm.effectiveTime = pickActivateDefaultTime(prev)
-  }
-  activateVisible.value = true
+  openActivateDialog(row, 'reschedule')
 }
 
 function onActivateClosed() {
@@ -353,6 +406,8 @@ function onActivateClosed() {
   activateForm.versionNo = ''
   activateForm.effectiveTime = undefined
   activatePrevEffectiveTime.value = undefined
+  activateIsImportFresh.value = false
+  activateBoundaryTimes.value = []
   activateFormRef.value && activateFormRef.value.clearValidate()
 }
 
@@ -394,8 +449,8 @@ function onCreateVersion() {
 function onRemoveVersion(row) {
   if (!row || row.psvId == null) return
   const msg = isEffectVersion(row)
-    ? "确认软删除已生效版本 " + (row.versionNo || '') + "？版本及产品、明细将标记为已删除，上一版将自动恢复生效并清空失效时间。"
-    : "确认删除" + (isPendingVersion(row) ? "待生效" : "草稿") + "版本 " + (row.versionNo || '') + "？其明细与附加费将一并删除。"
+    ? "确认软删除已生效版本（生效时间：" + (row.effectiveTime || '未设置') + "）？版本及产品、明细将标记为已删除，上一版将自动恢复生效并清空失效时间。"
+    : "确认删除" + (isPendingVersion(row) ? "待生效" : "草稿") + "版本（生效时间：" + (row.effectiveTime || '未设置') + "）？其明细与附加费将一并删除。"
   proxy.$modal.confirm(msg).then(() => {
     removingPsvId.value = row.psvId
     proxy.$modal.loading("正在删除，请稍候...")