Hi, thank you for your reply.
Which file(s) should I modify? Is such a modification quick and straightforward or does it need work to be functional?
If I can avoid re-importing my forum I’d prefer though.
Also, I noticed that after moving some posts with Topic.where(category_id: XX).update_all(category_id: YY) the number of messages was not updated and it seems that it couldn’t be either from sidekiq tasks. Also, it moved the “about this category” topic which can’t be deleted.
I guess this is a more proper way to do so: https://meta.discourse.org/t/best-way-to-combine-merge-categories-when-importing-topics/21353/6 but it doesn’t tell me how to properly delete all messages from a category, just how to move them.