If it is a "big" project you would rather not start from scratch, you could try downgrading 2.2.5, import project, upgrade to 2.3, and open imported project and see if it makes a difference. It's probably what I would do, but no idea if it makes or is supposed to make any difference. Just figure it is worth a try given the project structure overhaul between 2.2.5 and 2.3.ah I was also a little bit afraid of a bug.
I imported this project from 1.4, never used 2.0 or 2.2
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I use 2.3.0 now