Use Geometry Editor to Rotate/Translate Portions of OBJ?

in The Commons
I'm working with an OBJ of a box with hinged lid, and need to the lid to be functional. In rigging it I discovered that the lid isn't positioned correctly on the hinge, so when closed it collides with the box. Do I need to use modeling software to fix this, or is there some way I can do it with Geometry Editor? I'd prefer the latter if possible, but so far there doesn't seem to be a way to move the lid independently, even when assigned as a Face Group, Selection Set or Region (whatever THAT is). Maybe if I delete the lid faces from the original file, creating two separate OBJs, then manipulating them independently in a scene, and then saving it as a new, corrected OBJ?
Comments
There is another way where you assign parts of the obj to weight maps so they can be moved indepently. This is a pretty good tutorial I used to rig a static object:
https://www.daz3d.com/forums/discussion/156776/how-to-rig-a-prop-cabinet-doors/p1
You can use a weight-mapped dFormer to do the moving, but DS isn't a modelling tool. If it's just a matter of moving you could do that in the modeller, then use the Edit>Figure>Geometry>Update Base Geometry command.
Thanks for the suggestions guys. The more I thought about it the more I was convinced my original idea would work, and be easy to implement. I was right. Just split the obj into two files: File #1 with the mis-aligned part, and File #2 with everything BUT the mis-aligned part. Imported them both separately and corrected the bad alignment, then saved it as a new, complete obj, rigged it, and voila!
you could rig it