Given the nature of of this SE and other SE sites like "Movies & TV" or "Anime & Manga" or (possibly) "Arqade", it's pretty likely for questions that fit on one of said sites, to also be a good fit on SFF SE.
I know it's not acceptable to cross-post to multiple sites from the beginning.
However, in a situation where a question is asked on Site 1 where it is completely appropriate, but either does not receive an answer at all or a correct/good answer for a long period of time, is it considered acceptable to cross-post to Site 2 where it is also completely appropriate?
If not cross-posting, then is requesting for migration possible? Will this remove the reputation / badges / votes earned on that question?