Will my marriage extension visa remain valid if I renew my UK passport before it expires?

The individual inquired whether their marriage extension visa would still be valid until November 2019 if they renewed their UK passport in June 2019, given that their current passport expires in May 2020. Comments from the community confirmed that it is advisable to carry both the old and new passports when traveling, as Thai Immigration will transfer relevant stamps to the new passport without any cost.