I'm currently testing Elliot Jordan's jss-filevault-reissue script, I'll
let you know how I go, maybe you can test this yourself too.
https://github.com/homebysix/jss-filevault-reissue
FYI, for anyone crafting an extension attribute to check which version
of ARDAgent is installed so as to create smart groups to scope your
update policy to; The command to find the version of ARDAgent is
defaults read
/System/Library/CoreServices/Rem...