Changing insurance within Super - will it trigger a total review?

I'm purchasing a property to live in and, as it's the first time I've had a mortgage without a partner, I've been looking into income protection insurance. As it looks like I can't get it due to having had breast cancer (5 years ago), I decided to investigate the insurance that automatically got set up with my Super (12 years ago).

I was also advised when I set up my Will to increase the Death/TPD cover on my super insurance so my mortgage can get paid off with super+insurance.

However, I'm now stressed to change anything within that super insurance as I'm unsure if it will be considered a new application. All the documentation refers to "applying" for an increase in cover and answering medical questions. My biggest fear is that I'll try to increase my cover and end up with them cancelling my insurance entirely.

Has anyone been through this or similar and can advise what the outcome was?