Been wanting to compare the pre-searing and post-searing maps for a while, and, in a way I can't describe >_<, it makes more sense now.
I've had trouble finding maps that work together, so here are mine:
Post-

Pre- (ignore the dots, that's the last area before the searing, can't go there and go back


I used GIMP to line them up (there's a cave between ascalon city and ashford abbey that's also in post-, I used that to line it up, works well, though things are off by a few pixels, doesn't matter for this particular application), then messed with the transparency to see what matches up and what appears where and so on and so forth.