Finally got around to downloading and using OpenToonz, which was released by Studio Ghibli a few years ago for aspiring animators to use. Spent an hour doing a test animation, saved my progress, messed up, tried to undo, didn't go back far enough, closed the program to open to the saved version, program opened up to recent version that's messed up. :|

Seems that when I first used OpenToonz, the program had me working in sandbox mode, so the save function isn't reliable in that mode. Rage-quit since I managed to draw a pretty cute animation with my mascot, but now that's all gone. This screenshot is my only proof of that initial animation that's now gone forever.

SIGH.