Jo-Ann,
I didn't interpret their statement as "don't use them", I thought they said they haven't studied what the necessary process times are for the new kinds of cookers.
Maybe they implied that the manufacturers don't know either, but they didn't quite say that. It sounded like their only issue was how long is necessary to make it safe.
Maybe they assume that they are the ONLY authorities on how to can safely, and if they aren't sure, then it must be unsafe, but they don't quite say that either.
