yeah, but say you've updated filea.txt and saved it, sure it fits the "updated since time dot" profile, so it copies it across
if you run the bat file again without changing filea.txt, it will still fit the "updated since time dot" profile... so it will be copied again
if you run the bat file again without changing filea.txt, it will still fit the "updated since time dot" profile... so it will be copied again