Backup vouchers issued ??

[tiagopesantos]

hello to all, doubts?, I have the captive portal running which is only requested the customer voucher for internet access, when I generate the vouchers, generate hundreds and saved in excel, as they will using'm deleting old tickets .
doubt: always saved just the backup configuration of pfsense, pfsense is if my server stops time and I have to install another new server and restore the backup configuration made ​​the old server, as the captive will know where the last left off voucher time? I have to perform some specific backup files for this case?
Thank you  :D