Transposition problem in exported parts

Hi there,

I am having issues while exporting my parts in Musescore. Some of my transposed instruments (for example, saxophone and clarinet) are not exporting as transposed parts. My piece is in C, and they export in C. Some of the other instruments (trumpet) have no problems and export with their transposed key signature. I don't why this isn't the case with the other instruments. When I toggle the "concert pitch" button, all of the transposed instruments change back and forth between their respective key signatures as they should.

Any help would be appreciated,

Sofia