Editing chats not available, even after Advanced Encryption is turned off?

When I set up Zoom for my company I originally had Advanced Encryption turned on. After discovering that content was still encrypted with this setting turned off, and the downsides outweighed the upsides (for us), I turned it off. However, it is still not possible to edit chats in channels created before I turned the setting off. Some of these chats are the busiest and most important ones, so this limitation is a bit annoying.

Is there any way to fix this?