Note duration incorrect when importing .mid file

I create a simple 4 bar tune in Muse score - 4/4 time signature - with 4 whole notes.
When I import it into n-track - each note is slightly less that a whole note - almost 3.5 beats instead of 4.
If I import it into any other application - it appears ok - 4 whole notes. If I import it back into Musescore - it is ok also. Anyone else had this strange issue with n-track?

Hi Dessy_Cooke,

could you please send the MIDI file to, so that I can try to reproduce the issue?