Legacy AdMob Ad-id

As legacy admob is going to be closed, it’s time to update apps. They’re saying ad will not be served for old ad-id. Now in new admob, for each app new ad-id is generated. can this new id (ca-pub-id/xxxx) be used while updating the app ? or should i create new one ?

Ad serving will not be stopped for ad I’d which has got migrated to new admob

It might if you use the legacy id. We don’t know. I will try to ask the next time someone from admob calls me (they are supposed to get back to me this month).

you should republish with the new ID