Deserialise objects casts them to superclass?

I am facing the following problem: I have a List of Serializable classes that are created using a custom editor. When entering play mode, the list is preserved, as expected, but any objects in it are turned into their superclass. For example if i have a list of 'Move' which contains some 'SpecialMove' which inherits from move it is turned into 'Move' on play mode. Any ideas on why it happens and how I can work around it?

EDIT: It turns out Unity's serializer is the cause for this. Apparently it does not support polymorphism concepts. Any work arounds?

 

Basic answer is unity doesn't support serialization of these constructs.

The following links should provide more insight and a workaround.

• Unity Blog "Unity Serialization"
• Unity Forum "Serialization best Practices"
• Unite Nordic 2013 "Serialization In depth"