Backup Fails w/o Error

Hi,
I reported this issue 5 months ago, got a reply that it would be fixed and here we are again with the same issue even though it was closed as resolved. Please take action, it can render any backup taken useless!

The issue arises if you restore a previous backup and forget to delete the DB backup SQL file. The program should check for the existence of an older SQL file and name the new one with an ordinal or something like it:
dbfile.sql
dbfile_01.sql

As it stands now, the next time you do a backup the SQL file is not created which yields a DB out of sync with the rest of the backup! The old SQL file remains in the new backup.zip file