I don’t have an account for the bugtracker, so …
It is pointed out there … https://bugtracker.fairphone.com/project/fairphone-android-7/issue/60 … after guiding the user to do a TWRP backup of the data partition, that
“The backup you just created contains all your information that is stored on the phone. You can use this backup to restore your data for instance if your Fairphone 2 is stolen and you replace it with a new one.”
Can you for safety’s sake confirm that TWRP’s exclusion of certain data from backups was taken into account and doesn’t apply in this case? …
“What is EXCLUDED from a TWRP backup?” … https://twrp.me/faq/backupexclusions.html
Also, TWRP does give a warning in a different colour when backing up the data partition …