Excellent.....this is exactly what I've needed. With the CC2 maps, a file compression would be in order. With my painted PNG maps, I can use the PSP software to compress the files into something more manageable (conversions from MB to KB in most cases except the the truly huge maps I've painted, but even then they compress a 25MB file into the 5MB files you are wanting to abstain from).

I suppose if you were to export the CC2 or CC3 map to a picture file, then the image editor compression can be employed, could it not?