nyaa.si link does this:
So, here's the first obstacle I came across. Somewhere in the thread I came across another dump, so that might be part of the equation.
I followed some other advice I found about Baby-Lon's Adventure restarting forever, and that the fix to that was to change 16_global_event_data.sql so that there was 200 rows and they were all consistently labelled. I then saw on the Butterfly FAQ that you could change event_save_data.sql with 1s or 2s to unlock songs so I did that as well.
Currently, no Baby-Lon's/Rinon's Adventure stuff appears, but that's okay, I think I'm really only missing Dancer in the Flare and Far East Nightbird/kors k remix out of these. The "Final Stage Only" songs *do* show up on Final Stage, no Oni charts, as well as New Century and Rising Fire Hawk appearing here. Cirno's Perfect Math Class has Oni but Night of Knights doesn't. And while I get Extra Stage to work, there's just Extra Exclusive with Pursuer and Vanquish The Monkey in it. KAC 8th shows up in the events sort too, but it's the only one. DDR Selection shows up as well. No Extra Savior events or songs appear at all. Also no Endymion or Ace For Aces at all. Cosy Catastrophe appears on all stages, for whatever reason, which is the only thing that seems odd. EDIT: Also, Oboro has no Oni chart.