I'm very new to YEM as I never had a Tyros 5 so this might be irrelevant, but I just moved (sorted) some style files in YEM and the moved the pack to the Genos and on there they are in the order I put them into in YEM. To be sure, I then sorted them differently in YEM, sent the new pack to the Genos and they're now in the new sort order I had them in. Having said that, mine don't have any date/time stamps on them?