Ers hynny, mae’r rheoliadau hyn wedi’u hadolygu’n gyson ac mae nifer o newidiadau wedi’u gwneud i’r rhestr o wledydd a thiriogaethau sydd wedi’u heithrio:ar 11 Gorffennaf, tynnwyd Serbia oddi ar y rhestr;ar 26 Gorffennaf, tynnwyd Sbaen a'i hynysoedd oddi ar y rhestr;ar 30 Gorffennaf, ychwanegwyd Latfia, Estonia, Slofacia, Slofenia a Saint Vincent a’r Grenadines at y rhestr.
Since then these regulations have been kept under review and a number of changes to the list of exempt countries and territories have been made:on 11 July Serbia was removed from the list;on 26 July Spain and its islands was removed from the list;on 30 July Latvia, Estonia, Slovakia, Slovenia and St Vincent and the Grenadines were added to the list