Hello,
I am sorry to hear that so important data was corrupted.
In your case best case scenario would be to have a backup of those file.
Otherwise I think ENS does not have an option to encrypt files by itself. Most probably you had to turn of Mac encryption before upgrading ENS. Do you use the McAfee MNE solution?
In case above information was useful or answered your question, please select "Accept as Solution" in my reply, or give a Kudo. Thanks!
Nino