When attempting to implement collaboration/worksharing support it is challenging to only have the elementID upon deletion of an element in an IUpdater. We know that element Ids are not stable so it would be nice to have access to the Unique ID at least.
Ideally we would be able to have a read-only copy of the elements that were deleted. I need to be able to adjust my side database to stay up-to-date with the model information. As of now, I maintain a mapping between unique id and element id and then store the necessary information in a map of unique id to info-I-need (too keep the database up to date).