I also have the same problem.
And we also have to spend a LOT of time removing the shift-filds filter from the clips.
It’s a very very anoying situation.
Final Cut in version 4.5 didn’t do this, only after version 5 (I think) it started to dit this.
We have a lot of projects were we mix Uncompressed 10Bits and DV. It would be very usefull if the correct fields filter could be disable in the preferences.
Best Regards,
Jo