Question about Premium Battlepass vouchers (do i lose it after wipe?)

If the voucher is in the inventory, will it be valid after the wipe? Will it disappear as an item? I don't really want to spend it on this season (since I got the voucher itself in the deluxe version, not "only the first season"). So the question is: will it not disappear during the wipe, or do I have to spend it immediately, during the first season?