I am just reviving this thread as it deals specifically with passports.
I received my new passport in mid-February, using the excellent service provided by Thai Widows and Ex-pats. I decided to have the extension stamp transferred today, rather than waiting for my next 90 day report, as we will be going away for a few days holiday next week and I wanted everything up to date before travelling.
I arrived at KCI at 08h20 and sat down to wait, alone, for the Information desk to open at 08h30. The clerk in charge of that desk arrived at 08h30 and announced she was off to "kin khao" with the lady that fills out the huge ledgers in the main office. She returned at around 08h45, by which time there were two or three others awaiting her services. The usual Thai queuing system would have applied had I not asserted myself in a rather non-English manner to make sure I got in first. I completed the form she provided and was then sent over the road to get photocopies of the relevant pages of my old passport. I had already completed the form provided by the British Embassy with my new passport.
Then it was the ledger clerk, followed by the Officer who does the computer stuff and photos, followed by the signer-offer. That took us to 09h15. I also wanted a re-entry permit and had to start that process separately upon completion of the passport stamps. I left, both tasks successfully accomplished, at 09h55.
Passport stamp transfers clearly don't happen to us very often and so I thought it worth reporting here that it was free 0f charge and relatively painless. My only other thought was that I wish I had had a job, at some point in my life, where the first thing I did upon arrival was to go for breakfast!