The "important notes" section on the Japanese page[1] says that you can disable / delete an address at any time and create a new one. If I used this I would rotate every so often and at a minimum for each move. I'm a bit concerned for people that don't understand the risks of updating these. Anyone that's ever seen this code being able to lookup the person's address across moves is scary. I don't feel like this convenience warrants the risk of having this feature, personally. It's already convenient enough to just limit the input required for updating third parties to an alphanumeric code without allowing updating the addresses.