It would probably be wise to use a developer that is dedicated to the method used. If I'm using the A+B method I will use a developer that has been used only with that method. The same holds true when I'm using the Na2 method. This will eliminate any chance of contaminating your developer. Error on the side of caution. Some may not do this but I find it to be a simple precaution.
I gotta thank all you buckaroos out there for clearin' this up. Always good to knowin the truth. Now it's time to ride out with Ike an the boys along the north shore. I'm hearin' thar's some rough weather in those parts. Wish us well Pardners.