Help an NX convert- How do I 'open component as' or 'substitute'?

Hello,

I am rapidly gaining experience in solidworks, but need help on this one.  In Unigraphics NX, one could in an assembly or in a drawing(when using master model concept) close a part (or assy) and open the part or assembly as another part or assembly.  Can this be done in solidworks?  If not do I just need to change the way I'm thinking here?

This is what I'm used to:

1. in an assembly model.  Close part A and open it as part B.  (part B will have been a save as from part A).  I realize in some cases re-mating may be necessary.

2. in a drawing, all views point to one model.  Close that model A, and redirect the views to part B.  Most cases, part B is close to part A so minimal drawing changes will be needed.  A save as then gives a new drawing with little effort that points to the new part B.

I think some may reply that I should somehow use configurations.  One thing to note is that part A will be one of many configurations set up up front.  Part B will be created by different users as a custom, and I'm thinking we may want the link broken at that point.

Any help would be greatly appreciated.  If I just need to forget my NX ways and think differently, please tell me like it is!

SolidworksDrawings And Detailing