I upgraded to 2.7 yesterday. I exported a bunch of PDFs after the 2.7 upgrade. Those PDFs did not have any of my layout polygons or lines in them. Seems as though 2.7 doesn't "like" the layout graphics created in and MXD or a previous project. When we copy and paste those features to replace the old ones, or create new ones they export just fine.
This is a work around but it seems like a headache i should not have to endure each time i open a Pro project with 2.7. Can anyone provide some insight for me on this?