Dangling Forum posts

I realize, that more and more questions asked on the forum and in the fellow discord channel are cross posted.

Can we add to out etiquette, that in such cases the solution from discord is cross posted as well, so we don’t have all the abandoned posts, and worst case people spending time answering questions solved somewhere else and people looking in vain for answers?

Meaning the responsibility to copy the answer would be by the person cross posting.