Also with Studio Pro version 10.24.0
I wouldn't mind it, but it sometimes throws errors I have trouble to locate at first.
Very interested in a solution as well.
Have you tried removing all of the contents / settings of the duplicate profile (the one that used to be hybrid/phone) and then closing and reopening your app in studio pro? If that doesn't work, you may need to make the necessary navigation changes (to remove deprecated profile types) in 9 before migrating.
It's the deprecated hybrid phone profile with a wrong tab name. There is no way to remove it. In Studio Pro 10.24.13 there is a delete button, but it removes the primary Responsive Web Profile.
Mendix Team can you provide a solution?