Dubious Disc/Glitch World availability

[samtheman732]

Hey all,

I'm playing through reborn (again), and am doing my best to fill the pokedex.

I've just looked through my tracker and I saw that I do not yet have Porygon-Z.

 

I am now quite a way past the Glitch World area and I appear to have not picked up the Dubious Disc there. Am I screwed or is there some other way to obtain it?

Thanks in advance for any help

[Rendolf]

You can buy them on the 11th floor of the Obsidia Department Store, so you'll have to collect all the Department Store Stickers.