I am having this same issue. Entered all data that had been deleted and did an immediate backup. Now when I go back into qb I am back to the day before I made the back up. I can see the back up file on my external hard drive with the date/time I backed up and that I want to restore but it automatically switches it to the previous file.

The image on the left is the file that keeps opening. The one on the right is the file that I want to restore. Any ideas??  I have followed all of the instructions, it still opens the file on the left.