mbconfig file stuck in solutions old path

**System Information
- Model Builder Version (available in Manage Extensions dialog): 17.19.1.2460201
- Visual Studio Version 17.13.0. Prev 4

I created my ml model. It trained and runs succesfully. Then I changed my projects folder.
No other projects in solution have a problem but I constantly see this error. (When running tests or building the ml.net project). So it is stuck with my previous folder. and I am not sure why it is hardcoded in it anyway.

I tried to edit files manually to fix my old path.
Now when I open the solution the ml.net project builds fine with no error dialog. but it shows this a while later again. (with my projects old path: the one in the picture)