Bangkok Bank Online Overseas Transfers

Hi, I tried to transfer savings in Bangkok Bank online to UK.

The only transfer purpose was "Salary Repatriation" which is not the case (Non O family visa extension).

i) Anyone tried this option without being on WP? (Just in case I ever had any queries into my finances at a later date.)

ii) Presumably this can be done in branch - does this require paper trail from original transfers from UK to prove it has not been earned in Thailand (it has come over in tranches and passed through various accounts and different banks over the last 5 years).

Many thanks.