Yes, I think that would be easy to do, even by way of policy or ministerial instructions. As far as I know, it's something that was dealt with very quickly and expeditiously. When they changed the date of the age of dependency two years ago, they did have transition provisions that locked in dates at that time. I think it should be very easy to do that, and it should be done definitely. Anybody who has overseas dependants who may face delays, and therefore age out and get too old to be sponsored, should have the benefit of that provision.
On October 20th, 2016. See this statement in context.