I think only the UI_ named controls are detached and not used for now (5 total), but even if I delete these on the Hardware tab, I still see quite some detached controls on the Logic tab: Detached 35, 36, 38, 39, 40, 52 and 53. I think these are not bound to any hardware control or at least I don't know how to find out to which one (so I could delete that control on hardware tab). The current Preset is attached.
Cheers,
helgenr1