diff --git a/web/app/components/workflow/hooks/use-workflow.ts b/web/app/components/workflow/hooks/use-workflow.ts
index 3c27b5c91b..03ad421572 100644
--- a/web/app/components/workflow/hooks/use-workflow.ts
+++ b/web/app/components/workflow/hooks/use-workflow.ts
@@ -481,7 +481,6 @@ export const useWorkflowInit = () => {
           return acc
         }, {} as Record<string, string>),
         environmentVariables: res.environment_variables?.map(env => env.value_type === 'secret' ? { ...env, value: '[__HIDDEN__]' } : env) || [],
-        // #TODO chatVar sync#
         conversationVariables: res.conversation_variables || [],
       })
       setSyncWorkflowDraftHash(res.hash)
diff --git a/web/app/components/workflow/utils.ts b/web/app/components/workflow/utils.ts
index aaf333f4d7..0264b00f3d 100644
--- a/web/app/components/workflow/utils.ts
+++ b/web/app/components/workflow/utils.ts
@@ -212,6 +212,13 @@ export const preprocessNodesAndEdges = (nodes: Node[], edges: Edge[]) => {
   }
 }
 
+export const correctProvider = (provider: string) => {
+  if (provider.includes('/'))
+    return provider
+
+  return `langgenius/${provider}/${provider}`
+}
+
 export const initialNodes = (originNodes: Node[], originEdges: Edge[]) => {
   const { nodes, edges } = preprocessNodesAndEdges(cloneDeep(originNodes), cloneDeep(originEdges))
   const firstNode = nodes[0]
@@ -275,6 +282,19 @@ export const initialNodes = (originNodes: Node[], originEdges: Edge[]) => {
       iterationNodeData.error_handle_mode = iterationNodeData.error_handle_mode || ErrorHandleMode.Terminated
     }
 
+    // legacy provider handle
+    if (node.data.type === BlockEnum.LLM)
+      (node as any).data.model.provider = correctProvider((node as any).data.model.provider)
+
+    if (node.data.type === BlockEnum.KnowledgeRetrieval && (node as any).data.multiple_retrieval_config.reranking_model)
+      (node as any).data.multiple_retrieval_config.reranking_model.provider = correctProvider((node as any).data.multiple_retrieval_config.reranking_model.provider)
+
+    if (node.data.type === BlockEnum.QuestionClassifier)
+      (node as any).data.model.provider = correctProvider((node as any).data.model.provider)
+
+    if (node.data.type === BlockEnum.ParameterExtractor)
+      (node as any).data.model.provider = correctProvider((node as any).data.model.provider)
+
     return node
   })
 }
@@ -428,7 +448,7 @@ export const genNewNodeTitleFromOld = (oldTitle: string) => {
 
   if (match) {
     const title = match[1]
-    const num = parseInt(match[2], 10)
+    const num = Number.parseInt(match[2], 10)
     return `${title} (${num + 1})`
   }
   else {