If you met the requirements before (minimum spend, return ticket etc) you should be covered as it’s still the same account. If you have time and are still in doubt, call ANZ, and ask for a certificate of insurance.
I don’t think you are covered, I copied this from their PDS terms and conditions to activate insurance cover. Note the word current!
Eligibility criteria
To meet the eligibility criteria you are:
(a) (i) a current participating card holder; or
(ii) the spouse or child of a participating card holder who is
on the trip with that participating card holder