ISKeyValueList; Remove method does not set the Dirty flag

When using the Business Layer's ISKeyValueList object's Remove method, the Dirty flag is not set if an item is removed.

This means the IsDirty property does not return True.

For example, an Account's UserData property is an ISKeyValueList object. Removing an item may mean that saving the Account does not update the Account because it has not be flagged as dirty.