I'm having trouble with the dynamic lighting layer. For some reason when drawing lines using the polygon/line tool to block line of sight, if I ever click on an existing line while drawing, the line immediately goes to the background layer without my knowledge. So I'll spend 10 minutes in the dynamic lighting layer drawing a line around all the walls of my rooms, only to discover I've just been drawing useless lines all over the background layer. There also seems to be no 'send to dynamic lighting layer' option, which would fix my issue. Is there any way to keep my lines on the dynamic lighting layer? Anybody know why this is happening?