I've been having the same problem. When the pencil first became an option for pdf attachments, I loved it because I could annotate in ezpdf and my changes would be saved to the pdf like in the desktop client. However, in the latest update I now have three dots on the right which will let me choose to edit or view (if I don't just hit the main body of the attachment and open it in skitch) but it no longer saves the changes. Its back to the way it has been in the past (prior to the most recent update). Any help with this would be appreciated. I do most of my reading on my tablet and really appreciated the new capabilities.