Sorry this is all split up into multiple posts. I've no other way of contacting you at the moment, and you also seem to be the only junior administrator with a viable way of contacting without a Bulbapedia account.
Again, sorry for the text-block/huge hassle.
Oh, and based on the other posts, here's a belated wish to you for a happy birthday.
... which seems to not have any encounter data, there is a functional item that can be picked up, which is denotated by the overworld Pokeball icon. Looks like it's a NeverMeltIce. Wasn't included in the item manifest in the article for the city on Bulbapedia, nor was there trivia noting the inaccessible area.
Regardless, could you look into this? i wanted to make an account because I think there may be an inaccessible area in Icirrus City from Pokemon White 2 worth noting. Not positive if it's an emulation error or ROM dump error, which is why I wanted to share with others and get confirmation. There's an area above the old Icirrus City gym which is inaccessible except by noclip, and although there is dark grass there...