Hello there, headhunting dot com,

I'd suggest saving a backup file to other locations, such as flash drive, to see if it saves a .qbb file. This helps us isolate this issue. If it works, create a new folder to replace the old file. If not, you'll need the assistance of our Customer Care Team. Refer to the steps provided by my peer Catherine_B above on how to contact them. They can investigate why the backup copy is still saving as a temp file. They can also confirm if this is an engineering issue and help you fix it. 

Once resolved, use your backup file to restore your accounting data. It helps you go back to your save points in case you ever run into problems. For detailed steps, go through this article: Restore A Backup of Your Company File. 

I'll be right here to help if you need further assistance. Take care always, headhunting dot com.