Cubasis Midi Export Bug?

I’m experiencing a midi export bug in Cubasis 3 iOS nowadays, the picture on the right is a midi channel’s cc64 automation parameter (which is the only one channel in my project), while the picture on the left is the exported midi though “Mixdown”, you could see that the cc64 automation parameter changes, and no matter how many times I try, it always make mistakes. Does anybody know how to fix it?