Drums midi recording issue : 16th notes are not in the good stave

Hi everyone,
I try to create drumsheets into musescore using midi files that I record with my electronic drums and a DAW.

Everything works fine except the fact that when I open the midi file in musescore I have two staves and all the kick or snare 16th notes are in the top stave and the other kick and snare notes are in the bottom stave ( Drum file 1.mscz ).

It is an issue cause when I assemble the two staves together only bottom stave kick and snare are in voice 2 and it makes the sheet illegible (Drum file 2.mscz).

Does anyone knows how to solve this ?
Thanks by advance !

Etienne