Weird GM-Percussion-Data import from Finale

I got a “Finale” score with a percussion track. In Finale each note is displayed with the GM-Map Number.
I imported the whole mididata of the score in Cubase (12).

But the resulting Midievents, seem to have scarcly anthing to do with what the Finale Playback has played. No matter if I set the Miditrack to GM-Drummap or let it be shown as regular miditrack.

In Both cases the Midievents are either out of the range where Percussioninstruments ar mapped or trigfger completly different instruments as the Midi-Number shown in the Score would suggest.
see: Percussion-Part in Finale
see: Percussion-Part as normal Miditrack in Cubase
see: Percussion-Part as GM-Percussiontrack in Cubase

What can I do, to get the Miditrack in Cubase an let him choose there the same instruments as it does in Finale. Since both are GM-Mappings, I would expect, this track of the Finale-Score must be readable as Percussion-map in Cubase to.
Every helping hint to achieve that is much appreciated.
Thank you in advance