FBlueprintCompileReinstancer::PreCreateSubObjectsForReinstantiation

This method will pre-create all non-default sub object needed for a re-instantiation, what is left is to CopyPropertiesForUnrelatedObjects on the created instances map to finish the re-instancing If the re-instancing is done in a big batch and part to the sub object might already be re-instantiated, you will need to provide those via the OldToNewInstanceMap