Dawn,
My take on this. Original prints need not be stamped, only identified as controlled. What I have done is that originals are not stamped. The FDA requires a Device Master Record (in another incarnation, I called this the Design Master Document), which is the control point for all documents. My procedure states that “issued documents” are controlled, engineering and document control are exempt (after all, there should be working drafts). Maybe, Maybe not.
Best Regards,