How should i inform myself? Where is it written that export won't work?
And does anyone requries from you knowledge about theory of relativity to use GPS? Or quantum physics to use laser?
Please take a look at Daedalus in free moment, you will understand what i mean.
Again, handling private keys is for expert users. The software shows you your private keys just fine. Instantiating these keys into the relevant script is the responsibility of the recipient software. If they don't support Armory script types, then you have to fill that gap or I have to do it for you. I won't do it cause that's a waste of my time. Therefor it's on you.
You are somehow trying to fly a chopper with no expertize and complain that the manufacturer should have informed you that starting the engine doesn't automatically take you to your destination. I am not in the business of holding hands. As a matter of fact I'm in no business at all since you got this stuff for free. Now learn about bitcoin transactions or forsake your BTG. I don't care either way.
But please, try and demonstrate how it is my responsibility to deliver this feature on my own time and dime because you can't be fucked to spend the 2 days it takes to learn about crafting raw transactions.