> For the complete documentation index, see [llms.txt](https://beyondcompare.gitbook.io/project/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://beyondcompare.gitbook.io/project/other/undo.md).

# Undo

If you do something regretable in Beyond Compare, how can you get your old files back?

In TextCompare, there is undo: Ctl-Z

In FolderSync there is NOT an undo.   You have to enable "BackupFilesBeforeCopy"  or "BackupFilesBeforeSave".  These settings are in Tools->Options->Backups

When those are turned on you will start to see lots of files accumulate that have a .bak suffix.  (You can set this suffix to other options at Tools->Options->Backups.)  Here is a folder with a file and its backup file: 

![](/files/-LZ0K8yw9ibLpgxPdbQX)