Advanced Fog of War - tested it out and have a question

So I made a map, put the lines down, turned on advanced fog of war and the dynamic lighting (which I love by the way, even if it is a bit laggy).  The map has some hidden features, so I used the lighting to isolate them.  I wanted to make sure I did a good enough job, so I re-joined as a player and used a token to wander about.  Then OOPS, now my map seems to be permanently stuck with all the rooms my token moved through still showing.  This is a wonderful effect for the players, but my test has screwed it up.  How do I fix it without deleting my dynamic lines and putting them back in.  Help please.

Hi, I just started playing with Advanced Fog of War myself, but had/solved this issue already, so here you go. In the fog tools, you'll find a Reset Fog button. Everything is hidden again! Alternately, for instance if you only want to re-hide part of what's shown) you can use the Hide Areas tool. This adds both Simple and Advanced fog if both are enabled though. You can only Show/hide Simple/Advanced fog using the fog tools and holding down Ctrl/Alt while using them. Alt Key: Modify only Fog of War's fog layer Ctrl Key: Modify only Advanced Fog of War's fog layer

OMG - I didn't even look at the tools to see if there was a way to fix the problem.  Thank so very much.