I know this question has probably been asked  many times but is it possible to INJ Morphs that belong to a particular model into another one that it wasn't intended for?  For example if I wanted to INJ the Morphs that belong to the MIL Baby 3 into the preschooler Matt, is this possible?  There are so many good morphs in the MIL Baby 3 that Matt doesn't have.  Is there a program I need to get?  Thanks.
Adrian