you could move half and leave some to see how they do with them. Maybe they will be good parents. It would at least give them a chance to learn. Some fish will take to being parents right off, but some seem to need a little practice.
I like the 50-50 split idea to give the parents more practice and to see if they will tolerate them for a while, but yeah if the parents are spawning again I'd at least pull some out if you want them to live. When I bred jewels in the past the parents didn't seem to watch after them for as long as some other cichlid species.