Hi Craig! Thanks for your feedback. I’m glad it helped.
To take your MVC app to mac, it has to be .net core. I usually don’t work with MVC, but if you want to migrate, I found this guide here:
https://aspnetcore.readthedocs.io/en/stable/migration/mvc.html

Anyway, the migration from EntityFramework to EntityFramework Core can be a little tricky. Microsoft re-wrote it from scratch, so perhaps you have to make changes in your app. Here you can see a list of supported and new features.
https://docs.microsoft.com/en-us/ef/efcore-and-ef6/

I hope that helps…

Best regards, Stefan