already stated, you are not changing your visa (you dont have one) you are changing the reason for your extension of stay. When you fill in the form TM.7 it asks you for reason for extension, simply change that to marriage, and provide the correct supporting documentation. I have done this (albeit the other way around) without any problem.
Well, I am the only one to my knowledge, until I ask about it and get a reply here. My question was can they change the central database at local immigration, or do i have to exit and enter the country again.
I'm not sure what you mean about address registration, I have been at the same address for the last 14 years and my TM30 is valid. When they give me my 90 day slip the reference number under the barcode on the top right also contains my old passport number.
I am fully aware of the procedure to change and update to a new passport as I completed this almost a year ago. I have already done three 90 day reports, and one yearly extension on this new passport. I am still unable to do a 90 day online, it does not even let me past the first page. My question is has anyone managed to do a 90 day report online on a new passport issued inside the country without leaving the country !.