starter/gen in alison c20 engines

[rotorboy]

I looked in my bell training book and couldnt find it. I would swear that I had been told that the Starter/gen on the 250 series eng wont start (iginte) when in the gen position? Is this ture.
The exapmle given was if you had a simple eng failure (assume no re-ignite), and had ample time, you could flip the gen swith off and it the starter button.

How about other starter/gen like the one on the astar?

Anyone

thanks

RB