Were the saved tokens for a regular event vault? If they were for a "$character & friends" vault or a new character release store, then they won't carry over to this vault.
I actually had an old Honour Among Thieves vault token that I was able to use this time: the last few times this event came up it was during a character release, so I had been holding on to it for months. Made sure I remembered to open it this time.
DAZ0273 said: My Cosmic Chaos tokens appear to have gone AWOL - I thought I had 15 which I couldn't use last run as it was a release event. Gone now.