Hi, I also received an ADR for my CV, a day after eligibility complete. Full timeline details in my signature.
I've searched through the forum, and a lot of people seem to think it's a sign of security screening, but there are definitely a lot of cases where a CV is requested but background check gets ticked of in a week or so, so I'm not sure. Maybe they judge whether to send you off to SS limbo from your CV?
It seems that its normal for applicants from Iran, China and Russia to get such an ADR, as well as PNP applicants. If you're not from those 3 countries then it might be proof PNP applicants also get CV requests. Maybe it's a routine for some officer at Sydney office.