@Appalachian_Crusader The undo snap brings back anyone who was disintegrated by the Thanos snap but if you were on a Lear Jet and the pilot got dusted causing the plane to crash you stayed dead. Ironically you're better off being dusted because you miss the decimation and can't be killed for good by mishap. Plus a time skip meaning you live an extra five years into the future.

It's a mess.