I had first set this up using a jpeg
I converted it to interlaced gif
and only changed the name. Since the drawing was, essentially, exactly the same, it worked.
I didn't have to remap it. When I clicked (on one of my chosen spots)
it showed the info to be the same as what I had in the jpeg version.
did a pretty good job .. hey what?? That's why I like it. This link will carry you to the newest version.
I only have the old one but it still does what I need. (Can't afford to upgrade every 6 months or so.)