Astrophytum

Hello, I am planning to purchase a condo in Bangkok. The money was sent from abroad and converted in Thailand. My Thai bank says they don't issue FET forms, only "credit advice confirmation letters". My agent says FET forms are not being used anymore since last year. Is that correct? I am bit skeptical, because every article I've read says that FET forms are necessary. Can anybody help me to sort out my confusion? Are confirmation letters sufficient? Or are FET forms still necessary? How to get them? And will the "confirmation letter" also be enough if I want to send the money back to my home country one day? Thanks for your help!