Everything in map gets toss to Top-Left corner

Hey, I often find pieces of my map have flown by themselves to the top-left side of the page when I leave and return to a page. Normally, this has just been a slight inconvenience, but recently just wiped out two hours of map translation. Is there some reason this is happening? Can i prevent it somehow?

John, &nbsp;I am sorry about your lost work. We hear this from time to time but have yet to figure out why.&nbsp; To help us troubleshoot this please do the following steps. Go to&nbsp; <a href="http://supportdetails.com/" rel="nofollow">http://supportdetails.com/</a> and post what it gives you except for your IP address.&nbsp; When you work on your campaign please take a screenshot of the artwork before you leave the campaign. Take a second screenshot after you return if things have shifted.&nbsp; What is the campaign name? Also, is this just drawings? If so is there any specific type of drawing getting shifted (such as polygon/lines)? When this happens how many hours are you usually in the game before you leave?&nbsp; Thank you for your patience.&nbsp; - Gauss