According to this blue post the gold cap has been raised after the last patch.
I have 2 guildmates who have transfered after the patch their lvl60 characters with 4999g and another one 4999g with a lvl43. I tried today but the service says that my character exceeds the 2000g limit even if I only have 1999g on it. Did they already revert back to the old gold cap change?