feat: How to remove previously attached knowledge from the same chat session?

[intelligenceabhii]

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Problem Description

Hi team,

I’m using Open WebUI with the Knowledge / Document feature. I have a use case where users attach different knowledge sources during the same conversation.

Problem
When a user attaches a new document or knowledge source in an existing chat, the previously attached knowledge still remains in the context. I want the new knowledge to replace the previous one, not merge with it.

Currently:

Knowledge attached earlier continues to influence responses

There is no clear way to fully remove previous knowledge from the same chat

Even after attaching a new document, responses sometimes include information from older knowledge

Questions

Is there a supported way to clear or replace knowledge within the same chat?

If not, is this feature planned?

What is the recommended workflow for switching knowledge dynamically?

Use Case
I’m building a chatbot where users upload different documents (one at a time). Each new upload should be treated independently without requiring a new chat.

Desired Solution you'd like

Expected behavior
One of the following options would solve the issue:

Ability to remove previously attached knowledge from the current chat session

An option like “Replace existing knowledge” when attaching new documents

A way to reset RAG context without starting a new chat

API or configuration to clear conversation-level document context

Alternatives Considered

No response

Additional Context

No response

[Classic298]

Open the chat controls on the top right, there you can manage all attached files and attaches knowledges for a chat and remove it