I started the Sub command U.S. campaign, but there is an error in the first mission that prevents it from being completed. I think I know how to fix the error
, but when I did, I was only able to save it into the regular missions folder. I deleted the old version in the campaign folder, and then pasted in the modified version, renaming the suffix to the campaign format. However, whenever I load this replaced mission in the editor, it reverts back to the old version that I deleted (I can't test the single-mission version since it has things that don't work that did even if I don't edit them).
How do I properly edit a campaign mission? This should be a really simple thing to do...