Interlaced effect applying MBLooks filter on clips in Final Cut Pro7

Hi,

I'm having trouble with applying MBLooks filters on my clips in FCP7. The clip looks interlaced when I apply the filter.

My footage is Appleprores 422HQ and my sequence settings are:
1920x 1080 HDTV 1080i
Pixelaspect: square
Field dom: upper

I've googled a bit and found Magic Bullet Frames, it assumes to fix my problem. So I've put on the MBFrames filter as well, and after moving the levers and swiching boxes on and of there was no effect. Then I've tried to find a tutorial of Frames in FCP but couldn't find any.

Is there anybody out there who had the same problem?