Quick answer: Click Save Asset top-right of editor. Or enable Auto Save toggle.

Add a binding. Close editor. Reopen. Binding gone. Save wasn’t triggered.

The Fix

Input Actions editor (top-right):
  [Save Asset]        // commit explicit
  [x] Auto Save        // or toggle

After saving:
  [x] Generate C# Class
  Click Apply & rebuild

Auto Save persists every change but slows large edits. Manual Save lets you batch.

Verifying

Edit, save, close, reopen. Bindings preserved. Without save: rolls back.

“Save Asset. Or auto-save.”

Related Issues

For Input rebind cancel, see rebind. For control scheme, see scheme.

Save explicit. Or auto.