Last active last week
1. You'll have to manually set the custom flag in the generated output.. once it's in the game you'll be able to see it in the ingame gui.
2. Just generate the output and save as a mod as normal, then load it back up and resume editing whenever.
3. You probably have a space in one of your unit config names. You can check and fix this manually for now, next update will prevent you from doing this in the future.
I'm guessing that mission has scripts that modify equipment.. in which case I don't think there's anything we can do on our end.
I could be wrong, but I think mortars were always bugged. This is just a fault of Arma, the true range of artillery batteries is not exposed.
I think that comes with C2ISTAR, just disable the intel level.
It's not a direct replacement for the desired functionality, but does using the intel portion of the C2ISTAR tablet not solve this issue? You get a quick overview of where your forces are, where they might be moving, and where known enemy troops are.
You can blacklist tasks, there is a code snippet on our wiki for just that goal.
Little behind but I've forwarded this post to Tupolov who did all the civ work this update.