I imported a Trello board.
Settings > System > External System Import > Trello
The data was imported correctly and was created as a Business Project.
I then went to my project settings and change it to a Software Project
MyProject > Settings > Project type => Software
Although it claims to now be a Software project, it doesn't have the top level structure of a Software project. The top level of my project is missing anything to do with a Software project. So there is no Backlog or Active sprints button.
What I get after converting from Business to Software project.

I expect to look like this:
