Cannot retrieve Item Groups via WebServices

I was trying to get all inventory items from our NetSuite DB downloaded with information we need to change prices for the new year.  I was able to download all information for Inventory Items, Non Inventory Items, Kits, Assemblies, Services, Download Items but not Item Groups.  I contacted NS customer support and even though it is documentated that this is available, it does not work.  Case #1258182 / Enhancement #180425.  Anyway, this doesn't provide me any assistance to perform the task I've been assigned.

It would be great if I could create a saved search that contains Item Groups and all items (inventory, non-inventory, kits, assemblies, downloads) that make up the Item Group.  It would be similiar to a master-detail report with the master report being the individual Item Groups and the Detail report containing all the items that make up the Item Group.