Duplicate handling

Something I'm not sure about it if iRealB adds more entries of the same, for example if you by mistake download the same set over and over? I've seen entries ending with 1 and 2 but I'm not sure if they are duplicates or slight modifications. Mostly they look as duplicates.

If no dup support, any change that's added in, should not be hard (checksums or uuid stored per created document and updated with modifications..). Thx.

1's and 2's probably have a slight modification(s). Most any tweak to the title or chart will cause the app to think its a "new" song.
:))BOB