I am looking for advice on how to address the following: Our lab uses a procedure that is currently approved to test “specimens” that arrive in “runs” that consist of different numbers specimens and may take several days to complete. Currently, all specimens from the same run are processed following the same procedure. A new procedure will be introduced which will change the process and number of specimens that can be processed per run. The issue involves the start date of the new procedure and what to do with those runs currently being processed under the old procedure. Management wants to change everything over to the new procedure on a specific date, including those runs currently being processed, and make a notation of the change in the work log for those runs. As the quality manager, I would prefer start all new runs on the start date using the new procedure and let those runs that had already been started continue through completion using the previous procedure. I’m now getting push back from management. Am I wrong in my thinking? How can I make management understand?