I’ve been working around that with some ‘net-wide “eventide forums {specific keywords} {user name}” searches, if you remember any of that. Not the greatest method, but sometimes you get lucky.
I often have to look up my own stuff to refresh my memory.
When the forum got updated a couple years back, it broke all of the existing links. No more “…/community/…” subfolder structure.
You can manually insert “… forums/topic/…” if you happen to stumble across those old links inside a result in a ‘net search.