When I use the IgnoreIfDefaultConvention, enums that starts at 0 does not save the first element of the enum. When I change the starting number to 1, it starts saving again normally. I think that when it goes to check the convention, it checks the number and mark as default because integers default is 0 in C#, and the convention make the driver ignore it, but it is wrong because it's not a default value for Enum, it has a value, it's just the underlying value that is the same as the default for integer.

 

Example
public enum LogType
{
Info, // Doesn't save the first element
Warning,
Error
}

public class Model()

{ public LogType Type \{ get; set; }

}