Pretty sure that reactions given to posts there still count. Reactions in private conversations also count, and if all participants leave a conversation, it'll be deleted and the reactions given there will no longer count.Unfortunately yes, post count and reaction counts are lost when threads are moved to the Games section.
I already did, and it looks like they still count. Or at least Like and Love reactions do, I haven't checked the others.I just checked, they no longer count. See this post: