Logic Pro 9 Loop Browser Output bug?

I use a MOTU 828 mk3 which uses outputs 9-10 as the main stereo out. When browsing for loops in the Loop Browser, inexplicably for some loops, the output gets changed to stereo output. I then have to go into the mixer to the Prelisten fader and change the output.

I also get the Prelisten output changed to 'surround' when I select certain loops. I assume it's because they're coded in surround. If I put the output back to 9-10 I can hear them.

Is anyone else having these kinds of Prelisten fader switches? The surround switch is okay because it's probably linked to surround files but the 'stereo' out means that Logic is by default wired for output 1-2 and will randomly go back to it when the spirit moves it's logical binary brain. :brkwl: