[Cait]

If they're all does then intros shouldn't be too much of a problem. All you have to do is make sure they go into a clean cage that doesn't smell of either group (rearranged so the layout is new too) and keep an eye on them. There isn't usually much to see, some sniffing of bums and occasionally chasing round or squeaking from submissive does but that's about it. It's rare that does hate each other and cause injury.