I was accessing a page of my campaign in Safari on Mac earlier today, then later I accessed it on Firefox on Windows, and found out that there were certain pictures/tokens that were deleted from the campaign. For example, I used a certain picture for walls on the map layer, and now all of those are gone, but others on the map layer are still there. Also, certain tokens are no longer there - if there is a token missing that used a picture, all tokens that used that picture are gone. If I search for one of them, I can find it, but I can't drag it into the campaign page, yet I can still drag others that I have never used into it. Has anyone dealt with this before? Is it because I used two different browsers/OS while accessing the campaign's page?