Hmm it seems I'm on to something here. I messaged a very knowledgable DAZ forum admin, and he confirmed that pretty much all of the DAZ morph products do not use the PBMDCs - they use ExP, including the Aged set. (He couldn't name any that use the PBMDCs).

  Let's keep this quiet or we'll have all the content creators using the PBMDC's instead of the CC's now. ;) I CALLED THEM FIRST, back off - I'll bite you!