ExpandoAfterMap.cs

public void Main()
{
	Mapper.Initialize(cfg =>
	{
		cfg.CreateMap<ExpandoObject, Destination>().ConvertUsing((expando, destination, context)=>
		{
			var dictionary = context.Mapper.Map<Dictionary<string,object>>(expando);
			context.Mapper.Map(dictionary, destination);
			// after map
			return destination;
		});
	});
	Mapper.AssertConfigurationIsValid();
	dynamic source = new ExpandoObject();
	source.Id = 34;
	source.Name = "thirty four";
	var dest = new Destination();
	Mapper.Map(source, dest);
	dest.Dump();
}

class Destination
{
	public int Id { get; set; }
	public string Name { get; set; }
}