First code migration ignores DatabaseGeneratedOption?

I tried to change the field to a calculated field.

That is, from:

        Property(c=>c.IsPaid)
            .IsRequired();

      

        
        
        
      

    

in

        Property(c=>c.IsPaid)
            .HasDatabaseGeneratedOption(DatabaseGeneratedOption.Computed)
            .IsRequired();

      

        
        
        
      

    

Then after adding the migration:

Add-Migration IsPaidAsComputed

      

        
        
        
      

    

With forest migration, I got the migration class:

public partial class IsPaidAsComputed : DbMigration
{
    public override void Up()
    {
        AlterColumn("dbo.Citations", "IsPaid", c => c.Boolean(nullable: false));
    }

    public override void Down()
    {
        AlterColumn("dbo.Citations", "IsPaid", c => c.Boolean(nullable: false));
    }
}

      

        
        
        
      

    

Is the Entity Framework smart enough to determine what an intentional change is?

What's the correct way AlterColumn

to enter a calculated field?