Support downloading/exporting the edited version of knowledge documents

[jacktanxd]

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

Currently, when a document in the Dify knowledge base is edited and saved, only the segmented chunk content is updated in the database. Downloading the document still returns the original uploaded file from object storage.

This behavior is understandable from an architectural perspective, but it creates a significant usability issue for knowledge base maintenance workflows.

I would like to request support for downloading/exporting the edited version of a knowledge document.

2. Additional context or comments

#36362

3. Can you help us with this feature?

• I am interested in contributing to this feature.