Dropping multiple objects gives a List<object> instead of List<viewmodel>

[djodadof2]

When selecting multiple objects then dragging and dropping them, the handler dropinfo data is a List of objects, whereas when doing the same for a single object it gives a viewmodel.

Losing the type of the objects being dropped prevents any logic from depending on the type.

If I rollback to v1.1 this no longer occurs; in that version I get a List of viewmodels in the dropinfo data. This behaviour starts at v2.0.0

I am dragging from one datagrid to another datagrid.