It would be nice to be able to relink items to the score by selecting a region and relinking all selected items within the region. One solution would be to make such a feature available in the PDK and then it could be a plugin. (A plugin makes sense here to me, but ymmv.)
Currently I can think of a way that might work for a plugin to relink special tools edits, but it relies on a Finale behavior that might change. Anyway, to be right it should be available for anything that can be unlinked.
Ultimately, though, whether it's a PDK change or not, there needs to be a way to do it.