Hello,
I have a Drupal 7 website that still uses the Core Profile module (originally from Drupal 6 and later deprecated in Drupal 7).
In Backdrop, it seems that only the Profile2 module is available (although confusingly, it is called "Profile" again).
What is the best way to migrate my existing Drupal 6/7 Core Profile data into the new Profile 2 module in Backdrop? Are there any known experiences with this?
I only found this:
If you have profiles from the Drupal 7 Profile module, you should either convert them to Profile2 profiles in Drupal 7 prior to upgrading to Backdrop, or recreate them in Backdrop after you upgrade.
But no details on how to best convert or recreate them (my website has approximately 3,000 user accounts with profile data).
This is a guess, so if you test it make sure it's on a copy of your Drupal 7 site. I would suspect that adding/enabling the Profile2 module in Drupal 7 would provide an upgrade path there. After that completes, you could move forward with the Backdrop upgrade.