@madx1
When we talking about 'which one is the real person', yes, it'll be a quite long discussion without definite answer.
My point in this discussion tho, if this Type100 got their memories from backup recovery, then it will be pretty strange for her to not remember or aware about her being (which is implied in this story).
Then again, that depend on what kind of data being backed up in first place. Does they backed all of T-Doll memories up to that point, or just backing up certain data (like combat data etc) without providing context?
I guess we will get the answer with official Manga if they do revive Stg-44