This is a known problem and is being worked on, from what's been said. There's a few threads scattered around talking about it. Seems there was some hiccups when some corrections were made to the tokens. EDIT: This thread's got some answers from Mr. Knight and words from one of the devs: <a href="https://app.roll20.net/forum/post/145648/devin-night-tokens-disappearing#post-150449" rel="nofollow">https://app.roll20.net/forum/post/145648/devin-night-tokens-disappearing#post-150449</a>