Automapper creating new instance rather than map properties

Question

This is a long one.

So, I have a model and a viewmodel that I\'m updating from an AJAX request. Web API controller receives the viewmodel, which I then update the ex

Answer 1

According to the AutoMapper source file that handles all ICollection (among other things) and the ICollection Mapper:

The collection is cleared by a call to Clear() then added again, so as far as I can see there is no way that AutoMapper will be able to automagically do the mapping this time.

I would implement some logic to loop over the collections and AutoMapper.Map the ones that are the same