diff --git a/frontend/scripts/regression-data-process-wizard.mjs b/frontend/scripts/regression-data-process-wizard.mjs
index f6ada64..e9ceaf0 100644
--- a/frontend/scripts/regression-data-process-wizard.mjs
+++ b/frontend/scripts/regression-data-process-wizard.mjs
@@ -110,6 +110,7 @@ assert.match(
   /const \{ buildPreviewsByFile \} = useDataProcessPreviewBuild\(\)/,
   '父页面没有通过独立 composable 构建逐文件预览',
 )
+assert.match(viewSource, /backend-pipeline-v3/, '切分管线版本未升级，旧预览缓存可能被误用')
 assert.match(viewSource, /getDataProcessPreview\(taskId\.value,\s*\{ page:\s*1, page_size:\s*500 \}\)/, '预览构建后没有分页读取后端数据')
 assert.doesNotMatch(viewSource, /buildPreviewItems\(/, '创建向导仍在本地构建集成预览数据')
 
diff --git a/frontend/src/views/data-process/DataProcessCreateView.vue b/frontend/src/views/data-process/DataProcessCreateView.vue
index c381f91..4ff5853 100644
--- a/frontend/src/views/data-process/DataProcessCreateView.vue
+++ b/frontend/src/views/data-process/DataProcessCreateView.vue
@@ -57,7 +57,7 @@ const generationModels = computed(() => modelList.value)
 const taskSetupRef = ref<InstanceType<typeof TaskSetupStep>>()
 const modelSelectionRef = ref<InstanceType<typeof ModelSelectionStep>>()
 const confirmDialogRef = ref<InstanceType<typeof AppConfirmDialog>>()
-const PREVIEW_MODEL_VERSION = 'backend-pipeline-v2'
+const PREVIEW_MODEL_VERSION = 'backend-pipeline-v3'
 const WIZARD_STEPS = [
   { id: 'create', title: '创建任务', desc: '填写任务信息与处理配置' },
   { id: 'model', title: '大模型选择', desc: '选择生成模型并设置输出要求' },