I have high resolution meshes generated by xray CT scanner.  These come to me as water-tight STL files. To preserve detail, I use meshlab to convert the STL to OBJ 3d file format which I then, ScanTo3D is enabled, I import into SW2012 SP5 64bit running on a Core i7 with 16G of memory. 

I then use various standard tools to do a precision model.  My problem is that when I save the model then reload it, the reference mesh is in the design tree but suppressed.    Normally you would use Show/Hide but those commands seem to be surppressed as well.  Any one know what's going on here and how to correct it so that the Show/Hide for the imported mesh is restored?

Thanks

Kent