Sounds like when you change value in the name picker, you are calling a full refresh, which affects the combo boxes also.
Do you need fields to refresh based on a value from the name picker?
If so, place a panel, or div around the fields that the name picker will refresh, and set the name picker to partial refresh the panel or div containing the fields that need updating.
This way, it will only update these fields, and not touch the combo boxes, aslong as they are not within the same panel or div.
It may be that you dont need anything to refresh from the name picker, in which case, double check the refresh settings and disable if need be.