Sampletank via Iaa triggers on new instruments ?

Hi.
I have newst Cubasis and Sampletank - and Itrack Dock/ipad 2

I load a sampletank instrument via Iaa - and record a bar via my external midi keyboard.

I load another miditrack Cubasis Piaono - and plays the piano on my keyboard, but this track also triggers the above Sampletank sound…

Is there a fix to not make any subsequent midi track i load trigger the above Sample tank sound ???

I have seen a solution with Arturia where you had to change the midi setting on the Arturia App - but Sample Tank does not have theese settings ??

All the best
Morten

When loaded as an iaa in Cubasis - Sample Tank will trigger every time a try to play another instrument.