Seeing double ,duplicates that aren't really duplicates
Not far into my ancestors, I had Great grandparents that were cousins marry (same surnames) , their fathers were brothers. The parents of the brothers show on separate branches , same names, same IDs. and continue on with doubles. Is it suppose to be this way? To complicate further, another couple married with same surname though their parents are all different so no split there. I can't merge as IDs are the same and I don't want to break the tree trying ! I suspect the problem may be in the brothers listed in siblings , but I don't want to "break" anything here on Familysearch. Any ideas?
I have RootMagic and my family is making it crash trying to fix it there, every entry on that part of the family has 2 sets of identical parents for all the generations before them. If I try to delete one, they all go and database freezes until I Ctl-alt-del to close the software.