Lost Recent Version of File From OneDrive
I made steady progress on my maths investigation and at one point I spent 3 hours working on it. I've revisited the file a few days later to find ALL the changes made in the second 2 hours completely gone. There aren't any recovered documents and upon revisiting I noticed Autosave turned OFF despite having the file saved to OneDrive and not manually turning it off. Version history tells me that the last saved change was after the first hour, completely missing out on the subsequent 2 hours of important progress. Is there ANY way to retrieve this (somehow unsaved) work? And if not what caused this?