Just an FYI
If you aren't aware there are 2 "zone" areas in ICC intended for the use of your city voucher. Be careful not to apply your voucher to the CC in Serenity Island as it will take the voucher, but does seem to also take 500,00,000 from you/your org as well.
Waiting on a confirmation of this from FC dev/tech. Will update to see if they rectify it.