I'm sorry I'm sending you guys through this 'hassle' and constant change of plans.
Exporting the map with the WB provides a working .sga but not the weather options, thus I'd really appreciate it if the nominated mappers could take a few moments to go through the process of manually creating the .sga.
It's really not that hard
.
I've done it with Road to Carentan and I can confirm it works.