Well, the tiles that don't load correctly should save correctly... If it's not bothersome it will still look fine in OP2. What I believe the reason is the tile index is wrong.. Where the tile is supposed to be "impassible" it was made "passable" and vice versa. (No, I didn't index the tiles..... Someone else (at this forum) did... but I won't say who...)
Someday I will write a program that can scan all the OP2 maps and figure out the correct designation for the tiles.
BTW, in case you didn't know, placing the blue tile WILL change the tile designation, making it appear blue in OP2. It will also make it a "superhighway" tile, which makes units go really fast across it. (It sets the tile to 0C00)
also, Phil, I am adding 1) all the changes that occur in the patches, that it says when you run the patchfile.
2) code to prepare it for adding unit definitions and compiling the DLL's. (This code is not all stubbed out in the menu's and stuff so it's not even ready to run yet, it is incomplete.)