Backup and/or restore not remembering menu, font, settings

In the 5.1 version, I've tried to backup and restore settings with limited success. For example, my menu, font, and general TLB settings are not being remembered. I don't recall this being an issue with version 5.0.

Edit:

This seems to be a problem in version 5.1's ability to backup settings. I backed up settings under 5.1, and then reverted to TLB 5.0 and tried to restore, but many settings as mentioned above were not saved.