Unlink drawing from part model

Keith,

Save the print as a detached drawing.

Bob

Save As > PDF

Additionally, for individual views, you can use Convert View to Sketch in the right-click menu of each view.

Do a Pack and Go of the Drawing, re-naming both files as part of the process.  Then you can make the changes to the new Part and you'll already have a corresponding Drawing linked to it, and still have the original Part and Drawing.  See How can I create a new Assembly or Drawing similar to an existing one? if you aren't familiar with Pack and Go.

Would also help us to answer your question if you told us why you wish to do this....  The why you want to do this will shade our potential suggestions to achieve your real end goal.