Search/Read Private not working for a Persona-driven RAG search on forums?

I have been trying to setup a chatbot to answer question on some of our private forums, but it only seems to find results from the forum topics if I make the forums public. I have tried setting “Read Private” and “Search Private” in the Persona - and have the persona “allowed groups” set to the same groups as the category security. Can you think of anything else I should try?

The user initiating the conversation with the Persona has access to the private categories?

Yes. The topics are in a subcategory - so I will test it again with the parent (both are private) in case it’s a sub-category issue

I just checked, and I get the same problem if I post the topic directly in the parent forum. It work fine if I make these forums public..