I used the 'Transfer Purchases From iPad' menu option when iTunes told me to. I don't like it when the software is be so user friendly as to shield me from what is going on. I clicked the button, then I had to re-authorise my computer. Nothing seemed to happen, so I clicked to update anyway.
After the update was complete, I didn't notice that Apple iTunes had installed Game Center on screen 1:
That pushed Mashable to screen 2.
It looked like everything else was GONE!
But, all my apps were still on the iPad, on pages 3-7. LOL
Please don't Auto-Install your precious Game Center App to page 1.
Add it to the LAST page.