I had to do this last week , my new passport arrived last Thursday week , my retirement extension expires on March 1st.
So last Friday week I went to immigration first and they swapped my Visa over and extension to March 1st 2023 over to my new passport , this took 15 minutes.
Then last Monday I went to the bank to first update my new passport , then I got the bank guarantee letter to show I had over 800,000 in the bank. Then copied every page of my bank book , obtained and printed a 12 month statement from my banking app. Then went to immigration last Monday afternoon with my new passport and bank letter ect and they did my retirement extension early within 45 days. It took less than 10 minutes picked my passport up on Tuesday with extension to March 1st 2024 .