Since I installed Office 2013, I have issues pasting multiple PDFs into the same page in OneNote.
Pasting 1 file of multiple pages works fine, but when I drag in another file and choose "Insert Printout", then that file is 1) inserted at the top but 2) inserted in pieces, in the sence that some pages end up in front of the 1st file, and some pages end up after that. I.e. 2 files get completely mixed up. I have also experienced 2 pages being pasted on top of each other.