RMSS tests: Do the new scores supercede any old MSS scores?

I would like to know where it is stated that if you take the new RMSS tests, the new scores supercedes any old MSS scores. I was worried about plant closings and couldn’t find my ET-10 score so I took the RMSS tests. Of course after I got my scores in the mail I found my old score. Then I was notified thast the new RMSS test scores supercede the old MSS scores. Just my luck, buck I can’t find it written any where.