Drupal 8 includes a "Migrate UI" module helps people upgrade from Drupal 7 to Drupal 8. I'd like to see something similar for Backdrop that will help people move from Drupal 7.
The Drupal 8 also provides data on available upgrade paths (similar to what we can provide with https://github.com/backdrop-contrib/backdrop_upgrade_status) as well as an interface for uploading both files and database from an existing Drupal 7 site, into the current Backdrop site.
The first page of the upgrade process contains instructions:

The second page asks for your Drupal 7 database and Drupal 7 files:

The third page does an analysis of the modules you've installed on the new/empty (Backdrop) site and what's in the old legacy database, and generates a report:

If the new new/empty (Backdrop) site has content it it, it throws a warning first:

I would like to start working on this as a contrib module, but am interested to see what other people think about having something like this in core.
Recent comments
This is Robert's Backdrop profile: https://backdropcms.org/account/robertgarrigos You can see he is very active in Backdrop and very experienced. And this is his company...
innodus (Barcelona) listing – website looks compromised or no longer theirs?
Thanks for the report. I will unpublish it. Robert Garrigos is based in Spain and can probably help. I will ping him and point him here.
innodus (Barcelona) listing – website looks compromised or no longer theirs?
CkEditor 5. It had me baffled for a bit, however I am unconcerned because the workaround is functional. I had the earlier version codebase on local dev, with the later version on live....
Formatting Options not sticking