Since the new Prio 1 Update has been released, after opening a digitally signed pdf documentation within Adobe Acrobat Reader DC (2017) the adressbook.acrodata file is beeing set back to an earlier version.
(Earlier Version of the *.acrodata file was deployed in 2018, it was implemented into base package, deployed via SCCM.)
During the deplyment the new file overwrites the previous one (so far so good), but immediately after opening a digitally signed document, the old acrodata file reappeares under %appdata%/Adobe/Acrobat/2017/Security and overwrites the new one.
My question is, where else is the old acrodata file stored? From where does it comes back and how can it suddenly replace the new file?
Issue solved, under C:\ProgramData\Adobe\Acrobat\2017\Replicate\Security there was a copy of the originally (with bas package) deployed addressbook.acrodata file.For some reason as soon as a digitally signed document was opened in Acrobat Reader, the replicate file overwrote the one under appdata.So basically there was nothing else to do is to overwrite the acrodata file in both folders.