Ignore properties in data model while keeping them in EF Core migrations

You have two alternatives:

1. Using NotMappedAttribute:

   public class MyEntity
   {
        public int Id { get; set; }    
        [NotMapped]
        public string DeprecatedFeature { get; set; }
   }
   

2. Using FluentAPI:

   modelBuilder.Entity<MyEntity>().Ignore(c => c.DeprecatedFeature);