@Sean ********
my friend, Immigration NEVER transferred any "visa" from your old to your new passport. Maybe they transferred the "admitted until" entry stamp, or an "extension of stay permitted until" stamp. There is nothing such as a "visa stamp", except ONLY ONE, this is a 90-days Non-Imm visa stamp you will receive on Immigration when you apply to the "change of visa type". In case the "visa" was a sticker in your passport issued by a consulate not yet using the online E-visa system, Immigration would be unable to transfer the sticker from one passport to another, because Immigration is not in possession of any friggin' visa-stickers. Only embassies and consulate got those stickers