Correct !
I brought this paper across US - Canadian border in the car. This way, quite costly to me, I proved above any doubt X-rays are no good for unexposed emulsion. However for 10 months paper was still good, went bad just two weeks ago. I noticed, that it was a little less sensitive over the time, not much, at first I had to add to metered exposure 10 %, but at the end about 25, but the image was fine. Until this. Looks like x-rays are destroying sensitizers, it doesn't happen uniformly hence this mottled look. And it took 10 months. I don't know, it is good that 10 monts or bad and shouldn't happen at all.
Nevertheless, you guys take material across the border in the car, process it quickly. LOL.