I did wrongly saved my project in after effect after deleted some layers! There's limited undo, so it doesn't work with undo for me. Still can i get back my layers? Help me please it's important and urgent.
Check your autosave folder and read about incremental saving.
If you're on a Mac, do you use Time Machine, or do you have any sort of machine backup? Otherwise, Roei's suggestion is your only option.