MIDI import issue in Cubase Pro 12 - 3 bars suddenly change notes to half duration?

Hello,
I used Dorico to write my score. After I exported a flow to midi file. I then import the midi file into Cubase Pro 12. Somehow the last 3 bars, the note change to half duration.
I open the midi file in Musecore3 and it works fine.
What can be the cause of this ?
Thanks in advance…

Q

Hi,

Can you confirm it in the Key Editor, please? Isn’t it in the Score Editor only?

Hi,
yes, I confirmed it in the key editor.
The Midi notes shown up half duration.
Q