QML report to retrieve all collected items in a managed collection

Hello report Gurus

Does anybody know how to construct a QML report that will show all "collected" members of a managed collection?

This report https://support.ptc.com/appserver/cs/view/case_solution.jsp?n=CS174665&lang=en retrieves items initially added to a collection, but it does not retrieve all the other items which are gathered according to the collection configuration. This could be the difference between a single end item or all the parts in a configuration of that product.

Is the full collection calculated on demand? or persisted? If the latter, perhaps this is a stretch too far for a QML report.

Best Regards

Darren