I have been thinking Namine drew a picture of Roxas, Axel AND Xion, was Xion removed from the picture? and if not does that mean Namine remembers her exsisting? And if the image of Xion was deleted does that mean everything Xion touched forgets her?

Remeber, anyone who had been in contact with Xion forgets her when she becomes a part of Roxas as shown when Riku held the Oblivion Keyblade for a period of time and Xion spoke through it, so I guess you coudl say anythign that represent Xion, being drawings and such would vanish as there is no meaning behind it's existence.

Howver in KH2, who knows if Roxas remembered Xion when he regained his memories in Twilight Town, it's highly likely since Roxas did summon two keyblades against Axel and Axel in turn was surprised there were two as he only remembers Roxas wielding one keyblade.

Like DragonSeeker said, anything that represented Xion disappeared when she faded, and everyone who ever knew her forgot her. We see that Roxas remembers Axel, but he never sees Xion in his memories of the Organization, so I think he completely forgot her as well. That would explain why he only remembers the final times of being in the Organization, the rest of the time was spent with Xion.

Once after Namine did what she was suppose to, things were like xion never existed. Although there might be a way for xion to be remembered.
1) the shell she left behind when she dissapeared. Roxas may still have it without knowing all this time but since he went back into sora, maybe sora will have it (unless ansem took it from roxas)
2) whatever ansem put inside sora during when he was asleep probably contains info on Xion.

When Xion disappeared, everything that was connected to her, remembered her, represented her disappeared. Even Namine, regardless of how special she and her memory thingie worked.

DragonSeeker wrote:

Howver in KH2, who knows if Roxas remembered Xion when he regained his memories in Twilight Town, it's highly likely since Roxas did summon two keyblades against Axel and Axel in turn was surprised there were two as he only remembers Roxas wielding one keyblade.

As for that, I'm pretty sure Roxas didn't remember Xion, otherwise he would have had memory banks of her in that too. Everyone forgot all about her and everything about her.