Like I said, I have been doing it in my IRA for a while without a problem...it's just a stock and option cash account.
Exercising is something that IB has to deal with as a reality. I understand most of us will never exercise (from a buy to open), but they must allow customers to do so if they wish...it is a right after all.
I'm at a loss to tell you what to do next, other than keep talking to IB (and maybe def) and try to determine where the problem may be.
In my experience, IB has been kinda odd in the way they handle things. Most brokers will tell you they are fixing problems and rolling out all of these new features - and they are slow to do so. IB tends to be hard to nail down on defined problems and time frames (I mean on the record - not from def), then all of a sudden they roll a new release and fix many things and deliver new stuff that few even realized we'd asked for.
I don't want to say I'm sure they're working it...but I would definitely keep talking to them. I would keep going up the chain and if you get very frustrated, maybe write Steve Sanders if you're not getting answers.
