Backup forum

In my tracefile.txt file I see the following entry for several files having to do with my Thunderbird email profile. Here is one such message:

[09/08/2021 12:00:52] [CDP]: Backup for D:\Users\foo\Thunderbird Profiles\9aprwjlx.default\Mail\Mail.optonline.net\Inbox will not happen as its size Exceeds Maximum CDP size permitted for backup.

First, the file does appear to be backed up since I can see it when I click on the restore tab in the program.

Second, I was not aware that file size has anything to do with whether a particular file is backed up. It *is* a large file (~11 GB), but my entire backup takes up a very small percentage of my allowed space on my IDrive account.

Any feedback would be appreciated.