We created one welment part having 5 to 6 different bodies....(not strucutral ...can say multibody part) in SW2010 SP 2.0
Problem is when we open that part from assembly or drawing First body in part hides automatically...... and if we flip(ctrl+tab) to drawings there also its hidden....
every time i have to show it ...and save but it is repeating the same...
but other than those sepcific parts other multibody parts are ok.
Koustubh
If I met that problem
I'd set all to default display settings.