I'm researching five branches of my family tree.
I'm using FTM V8 and I have a family file/database set up for each one of these five families. However, once I upgrade to FTM 2012 and export the data into Ancestry.com, would it be best to merge all family files into one family file or can I/should I keep them separate? (Note that there are people that overlap in all family files, such as my immediate family. Will that be any kind of a problem if I keep the five separate family files?)