POW dog tag Stalag XVII A (and Stalag XVII B?)

[banivechi]

A.jpg

B.jpg

It is possible that the owner to be moved from Stalag XVII B to Stalag XVII A? The inscription on one side: STALAG XVIIB 16530 is cancelled. I've found that officers from Stalag 7A were moved to Stalag 17B in 1943 http://www.b24.net/pow/stalag17.htm, but nothing about moves from Stalag XVIIB to the another, except the exodus in April 1945. Can provide me somebody another informations? I have the dog tag on sale on ebay and I will be happy to know more about it...