The "bank letter" is a statement confirming your are owner of the account and current balance.
The "bank statement" (required by some immigration offices) is a 12 month statement to verify you have complied with the financial y. It shows all transactions for 12 months.
In addition some offices require an update of account on day of application.
I choose to make small deposit as that shows activity and also update.
SCB removed branch from CW some time ago.
For that reason alone, I advise new folk dealing with CW to opt for bank with branch there.
Re question ..."and 'bank deposit of foreign funds' print out again all on same date?"
For extensions funds not required to from abroad.
Also do not concern yourself with balances matching.
You can obtain bank letter and 12 month bank statement up to 7 days early.
Making small deposit to update on day of application not an issue