Help How to move cards into iterator box?

[huangyisan]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I have create one workflow, this workflow will recreate text by input single file, and upload it into Knowledge. And i want to move this workflow into a iterator box, so that I can input more files. But i dont know how to do, and I dont want to recreate the workflow.

2. Additional context or comments

No response