I think it still works as worded.
"sealed before each record run" . . . well, if you keep it sealed, qualify in the first, second, third or whatever and go to Impound, it's still sealed before your qualifying run and they inspect it there in Impound. And if you don't have to add water, you run it again in the back-up run -- and get it inspected again for certification.
Same with gas. Sealed and run as much as you can if you've got enuf. But if you want to add some gas or water, you have to do it under supervision and have it resealed.