Duplicate instances despite EqualityComparison

[automapper]

Duplicate instances despite EqualityComparison

[TylerCarlson1]

So what I'm seeing is Tree is tied to the Forest and a Section, so there's 2 parent child relationships to Tree. If that's the case AM.Collections can't help because it has no idea about the dual parent relationships. The only way to do this is do an after mapping which corrects the issue, or don't map to sections and pass the matching Forest.Trees object in the DB to the sections, so it doesn't generate a new object.

Also are you using a DTO for your classes? I see it looks like you are cloning here, which might be part of the problem.

[FBryant87]

Ah so multiple parent relationships are the problem here, many thanks - will close.