diff --git a/src/services/workflowService.ts b/src/services/workflowService.ts
index 117f6a003..0fa2e1240 100644
--- a/src/services/workflowService.ts
+++ b/src/services/workflowService.ts
@@ -94,10 +94,14 @@ export const useWorkflowService = () => {
       await renameWorkflow(workflow, newPath)
       await workflowStore.saveWorkflow(workflow)
     } else {
-      const tempWorkflow = workflowStore.createTemporary(
-        newKey,
-        workflow.activeState as ComfyWorkflowJSON
-      )
+      // Generate new id when saving existing workflow as a new file
+      const id = crypto.randomUUID()
+      const state = JSON.parse(
+        JSON.stringify(workflow.activeState)
+      ) as ComfyWorkflowJSON
+      state.id = id
+
+      const tempWorkflow = workflowStore.createTemporary(newKey, state)
       await openWorkflow(tempWorkflow)
       await workflowStore.saveWorkflow(tempWorkflow)
     }
diff --git a/src/stores/workflowStore.ts b/src/stores/workflowStore.ts
index 2db34e228..db5fdd5c2 100644
--- a/src/stores/workflowStore.ts
+++ b/src/stores/workflowStore.ts
@@ -441,7 +441,7 @@ export const useWorkflowStore = defineStore('workflow', () => {
     getWorkflowByPath,
     syncWorkflows
   }
-}) as unknown as () => WorkflowStore
+}) as () => WorkflowStore
 
 export const useWorkflowBookmarkStore = defineStore('workflowBookmark', () => {
   const bookmarks = ref<Set<string>>(new Set())