Disappointing to hear, but thanks for your time. Figured it was worth a shot.

Yes, it works in Arma3 with default registry value.

Forgot to specify, when I say it worked in Arma2, I'm specifically referring to it being bound in the userconfig of a mod (ACRE). TeamSpeak 3 is also able to pick up the key with it disabled, without typing in all caps.

As I stated, this worked fine in ArmA2. I don't want to lose a key, I just don't want to type in all caps.