I just wanted to retag them to
jsf2 because it already exist and there's a lot more of it. It just didn't work. I edited the tag, saved it, but the changes were not reflected nor error'ed in some way. This is regardless of whether I used the quick-tag-edit or the full edit. Newly added tags during edits are however correctly reflected in changes.
It look like that the implicit tag synonym retagging has been introduced, but I can't find a note of it and all the "original" synonymous tags are still there?