When I return to Thailand it will be on a 90 day single entry non immigrant visa. During the first 60 days I need to renew my passport before applying to convert to a marriage visa in the last 30 days. When I get my new passport should I go to the immigration office to get everything transferred to the new passport before turning up again to initiate the marriage visa process?
TLDR : Answer Summary
The individual plans to return to Thailand on a 90-day single-entry non-immigrant visa and needs to renew their passport during the first 60 days before applying for a marriage visa. They are inquiring whether it's necessary to transfer their current visa to the new passport at the immigration office before starting the marriage visa process.