So I am aware that patch 6 causes previous saves to not work. My question I am looking to get answered is.. Should I delete the old ones? If i keep them will I get to possibly play said saved games when the game releases? I would rather not have useless files on my computer if they are just going to be taking space and unusable in few patches.
I can assure you that those save games will be in no way compatible with the final release of Bg3, much less any future release or patch. Unless you intend to play them on Patch 5 according to the instructions for doing so - you are better off just deleting them.