@sirdavidabraham
Thanks go to you, I hadn’t seen this method anywhere else, including the manual, had accepted the apparent “blackout” inside Cubasis of many favorite IAA synths, drums and other “instruments” - I hesitate to use that term! - and had even started deleting apps from the device that I thought I couldn’t use, as I have found a workflow I love in Cubasis.
(That I thought my creative output could benefit from deliberate narrowing of synth choices, and was a little relieved to use Cubasis as an excuse is another story. Meanwhile- Im going back to the idea that my workflow is built on having access to the fullest garden of synths possible, thanks to you 
)