Thanks for the quick answer @juanshishido.
About the v3 breaking changes, to quote the changelog:
The PUT accounts/:account_id/targeting_criteria endpoint is no longer available. We’ve decided to make this change because the replace behavior with this endpoint caused advertiser confusion and it was not consistent with our other PUT endpoints that update a single resource at a time. Instead, partners should use the POST batch/accounts/:account_id/targeting_criteria endpoint, which provides greater flexibility including the ability to both add and remove targeting in a single request.
Since you’re promoting the use of this endpoint instead of the PUT one, do you think there is any chance that a working Delete operation will be live by the EOL of the v2 (1st of august 18)? Or should we implement a temporary workaround with the DELETE one?