2
https://entityframeworkcore.com/knowledge-base/54220057/use-automapper-for-adding--updating-and-removing-items-in-list
2 You can check this thread.
https://stackoverflow.com/questions/54220057/use-automapper-for-adding-updating-and-removing-items-in-list
1 https://social.msdn.microsoft.com/Forums/en-US/dbb9db83-6a39-4bf6-9887-134c0b65cbf5/update-existing-entity-by-assinging-to-object-not-the-value-to-object-in-entity-framework?forum=adodotnetentityframework
You can try this forum. It might help you