Problem about fingerings when exporting mscz to midi file

Hello,
I am new to MuseScore 4. And I have a mscz file for piano, which contains fingerings. But after exporting mscz to midi file, I found that there was no fingering in midi file.
When I clicked the fingering, the message at the bottom of MuseScore was correct, so I think fingerings in the mscz were correct.
Have I missed something in my ignorance? How can I export mscz to midi, with the data of fingerings?
Thanks,
Dromi