MusicXML issues


I’m having this issue with Nuendo MusicXML => Sibelius for a year now.
Every 5 bars includes a key and timechange when importing the score to Sibelius.
I waste my time cleaning this up every time, anyone else have this problem?
It happens on OSX 10.6.8, but had the exact same problem with W7 x64 earlier this year.

The major point with MusicXML is to transfer scores to and from the two major scoring applications Finale and Sibelius, isn’t it? Latest versions of both apps…

A task for the beta team I suppose?