Why is there so many backups? This normally didn't happen before. but when I do certain things I save the file to protect against a crash. I don't have "backup on save" checked, so I don't know what the deal is.
I have a program called filehamster that does this. It is not a macro. It monitors certain folders and when it detects a file change or a new file it saves a new file to a external drive with a modifed file name reflecting the time. This gives me revision history. I suspect you have a similar program someplace, not inside CorelDraw as a macro but running on your system. Maybe one of these is installed AutoVer, AutoSave, AJC Active Backup, Cascade Point, DocShield, Genie Timeline or something similar.