Just upgraded(?) from Acrobat Pro XI to Pro DC. Problem: Had to uninstall XI first. The DC installation lost my signatures, etc and whilst my XI (and previous) versions locked documents after signing to prevent editing operations (still allowing printing etc), the DC version does not! This is a problem. I used to simply sign a document and all the relevant permission restrictions were automatically applied to it. I cannot find a simple answer to this in "help". Does anyone have a recipe for signining to automatically apply restrictions to permissions?