First off, thank you for the amazing work you keep doing as well as the patience you have aswering everything posted here.
Now, there's two problems.
First: it says a bred Milotic can't have a dream ball. It gives the same problem with every ball not avaible in gen 7, such as the apricorn balls from HG/SS.
Milotic is here;
Second: it says a gen 3 Glalie (as well as anything else from gen 3) can't have any ball other than the regular one. Pokéball works, everything else is marked as invalid.
Glalie is here.
Am I missing something or is this just a bug? I remember the last build I used (I think it was from april), although it had no gen 3 support yet, didn't give me errors for mons bred in dream balls.