Anyone looking for a mitigation on this issue,
Opening user_data.ripdb with SQLite, the playlist table contains the bookmarks for the application.
Each row contains a category of bookmarks, with channels being kept as JSON format in the content value.

Copying the Group Channel ID from the webapp is the easiest method of obtaining the Channel ID we need, it can be appended to the end of the array alongside the rest of the data. Restarting ripcord will refresh these bookmarks immediately.

Although, I found it easier to add a random user message channel to the bookmarks, then overriding it's channel ID within SQLiteStudio

Fixed in next release