How can I transfer a non-B visa stamp and re-entry permit from an old passport to a new passport in Thailand?

To transfer a non-B visa stamp and re-entry permit from an old passport to a new one in Thailand, the process typically involves visiting an immigration office. Users suggest visiting the IT Laksi immigration office as the correct location, where staff will assist in filling out forms and making necessary photocopies. No specific deadline was mentioned for the transfer, but it is advisable to do it promptly after receiving a new passport. Most experiences indicate that there is no fee for this service and that the process can be completed during the visit.