I think it would be better to just add a Copy new map question box after a map make.
HiTech
I'd be OK with that. I was originally thinking on that line, but just assumed it would be better to handle it on the dialog that I already had to bring up, rather than introducing another layer UI.
If you go that route I would suggest:
1. The exported bmp is always named same as terrain whether it is copied to texsrc or not.
2. The popup dialog has "OK" focused as default so that I can just quickly hit enter.
3. Make Map doesn't seem to require I save first, so the updating of the minimap should be done without a full terrain reload. I might have other non-saved changes. Just update the mini-map texture in-situ.
Another option would be instead of the check boxes, just always do #1 and #3 above, and then replace the Make Map dialog OK button with two buttons:
[Make Map] [Make Map and Update CBM] [Cancel]