Auto-save appears to run after saving the file for the first time.
In my case, if you did not save the file and proceeded with the operation, it does not seem to create an autosave file.
Save the file at the start of the operation and proceed.
※ I understand that other software that supports autosaving also does not create autosaving if there is no saved file (not sure if all software works the same)
Thanks for the reply! You may be correct about that, but in this case, I’ve been working on the same file for days now and it’s been saved many times manually. I’m not sure why but blender didn’t like the file for some reason.