Starting with volume 4, every set uses a naming convention that helps to make sure no two sets are named the same and that corresponding logos/hats/jerseys match up.
So, in individual volumes 1-3 (which are each linked in the OP), I believe the sets are labelled like: aces-1, caps_aces-1, jerseys_aces-1. This matched them, but the game couldn't find them so they needed to be added individually.
With 16, Andreas changed the naming convention to be like this: aces_123456_abcdef (the 6-letter combos being the main and background color hexcodes), caps_aces_123456_abcdef, jerseys_aces_123456_abcdef. So, the sets are all named to match, but even better, the game will automatically put them in the game for us.
But, for the Complete collection all sets have been named correctly, even the ones from volumes 1-3. So if you'd like to have all of the sets with no naming issues the best route is to download the Nickname Project Complete: Vol. 1-5.
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