Hello Taduikis. Yes, you can fix your UV's for sure. If it's starting over and fixing any misplaced seam and unwrapping again, you can totally rework your UV's anytime. Unless you mean something more specific?
It's impossible to fix them one by one. Somehow I need to fix them in bulk.
Omar Domenech
replied
In that case you can always UV unwrap just one and then transfer the UV data to the other ones. The hotkey is Control + L and you select every single one and then lastly you select the one that has the UV's you want and do the copy UV maps operation.