Another banking  & immigration related question. Sorry if it has been asked before.
I want to change my 800K 'immigration deposit' from Bangkok Bank to another bank. 
I have most of my other monies tied up in CD's in the States ----  so I would need to use the money in the Bangkok Bank account to satisfy the banking requirement in regards to my upcoming renewal of my one year extension Non-O 'retirement' visa.
As of today I have 59 days left until my one year extension expires. 
Do I need to go to Immigration and do some particular paperwork to get this bank change properly pushed through in regards to my visa requirements, or can I simply do a direct transfer in one day between the two banks and have all the banking papers in-hand from both banks when I do apply for renewal?
To cover myself, I would go to Bangkok Bank and get my bank book updated prior to doing the transfer. Plus I would leave enough funds in the account to keep it open and active after the transfer. 
I have my transfer limit on my BB app set to two million baht a day so I should not have an issue making the transfer itself. 
One question that particularly bothers me is perhaps the one day date change that may show up between the bank books/statements during the transfer. Think that may be an issue if it happens that way? I know Immigration can be a real stickler about some things.
Heck, a transfer may even take more than one day to take effect ya think? Of course I will check in with both banks regarding that question but I am just trying to get something of an idea as to what to expect and watch for.
Any advice or knowledge would be most appreciated! Thanks!
TLDR : Answer Summary
The user is seeking advice on whether they can transfer their immigration deposit of 800,000 baht from Bangkok Bank to another bank while renewing their Non-O retirement visa, particularly given their limited time until the visa's expiration. Community members advise against it, stating that changing banks now could jeopardize the visa renewal since the funds must be in the new account for at least two months prior to the renewal application. They recommend waiting until after the extension is granted to make such a transfer.
NON-O RETIREMENT VISA RESOURCES / SERVICES
- Go to the Retirement Visa Section for information on requirements, including age restrictions, financial requirements, and necessary documentation.
- For immediate assistance, contact Thai Visa Centre directly via LINE at @ThaiVisaCentre or Email them.
- Explore recent discussions by using the Non-O Retirement Visa tag in the search box at the top of the page.
- Join the Thai Visa Advice Facebook Group to ask your questions, and get advice from others.