I've launched a new enhancement for the treasure system that allows a character's treasure list to be divided into an Inventory and a Stash. As the names suggest, your character's inventory represents all of the treasure he or she is carrying, while your character's stash represents treasure that has been stowed away in some remote, secure location. Treasure kept in your inventory will be printed out for you prior to any event for which you RSVP, while treasure kept in your stash will remain online and thus unavailable at the event.
The main reason for this is to make on-site treasure management simpler. Many characters have treasure that they don't care to bring into play, but would like to keep nonetheless. By stashing this treasure, you forego the ability to use it so you don't have to worry about losing it.
If you haven't already done so, please go to your character's Treasure tab and click Stash next to anything you don't want to bring into play. This will save you the hassle of keeping up with it and save logistics a lot of unnecessary work and wasted paper.