Numbered lists changing to

When I updated a linked FrameMaker file in Robohelp, my numbered lists changed to "rh-list_start class="rl-p-List1" level="1" ?>" where "List1" is the name of the style. I didn't change any settings in my RH project. I made some simple content changes to a FrameMaker document, updated in RH, and now all my numbered lists look like this. I don't know what happened or how to change it back.

I'm using FM 10 and RH 9 in TCS 3.5.