X-Men of the Past

I saw X-Men Orgins: Wolverine again last weekend and I'm confused becaused I noticed something more. This movie features the life of Wolverine before the 1st X-Men movie. In the new one they have Wolverine meet the kids that went to live with Professor Xiavier, however in X-Men Xiavier seems to never even known much about Wolverine, which messes up my timeline for these movies. I know those kids should have mentioned Wolverine at least once to the Professor Xiavier.