For changes on WACs yes, because they are only printed every few years.
However I've never had a problem with having something published or corrected on the next AIP MAP release if the change RQ is filed with AIS by their cut-off date.
As I said, I don't know who the parties are talking to but if it is CASA instead of AIS Airservices (the aeronautical data managers and publishers), I can understand why a delay or no action.
Any questions an email to that docs_amend address and the ladies have been only too happy to assist.