Hi,
I'm having a problem with joining a group to a motor joint. I have a complex object, a tank...
I drill down to one of the wheels and draw a motor joint at it's center. Next step is id like to join the motor joint to the wheel group. Once I select the joint connection tool and attempt to select the wheel group, the whole tank reappears, i.e. I am no longer in the wheel group so I cant attach the wheel and the motor joint....help....in other words...once I click the joint connection tool and move close to my isolated group the view switches to all the levels above it regrouped without me having access to the relevant group...ive attached the file I'm working on..

Merkava+MK4[1].skp