Are you trying to compare the attribute values or if the objects are the same?
For attribute values, you can use the object comparator module
For comparing if two objects are the same, you can just use an equal sign in an exclusive split.
Hope this helps!
Edit: I also see that the java action "memberhaschanged" is still in community commons.
Edit 2: I think the action you are looking for is in this module. This module was branched from community commons at Mx version 6.7