If the document was accidentally closed/crashed and not saved/the file was damaged/mistakenly closed and forgot to save, you can refer to the following methods in turn to recover the version history of the file by finding the local backup:

Operation path: open WPS20 19- home page-application-backup center-local backup.

(Tip: If the preview version history is what you need, please save the version history for future use. )

Pay attention to the "WPS after-sales service" of WeChat official account on WeChat, and get more "services, skills and activities benefits".