Not having a great time.
PM> command run
Scaffold-DbContext \"Server=myserver;Database=mysqlserverdb;Trusted_Connection=True;\" Microsoft.EntityFram
Between installing the EF power Tools and the Latest Core 2.2.x.x SDK I am now able to change my project to use dropdown change to the .net core 2.2 (it was previously only able to do 2.1.
Then with Nuget updates etc.. , it finally works!