During a recent 3-way call between BA, the AA RTW desk, and myself, I was informed by both BA and AA that my current DONE5 ticket will need to be converted to a paper ticket due to a future CAI - AMM leg on RJ. This was the first I had heard of this, and the ticket is hardly new (issued in March 2009, travel begun November 2009, at least 10 or so free flight/date changes and 1 paid itinerary change since issuance) and the RJ leg in question has been there from the outset. [The ticket was issued by AA.]

I'm concerned about the implications of doing this paper ticket conversion, as I've found the advantages of OLCI and PYOBP to be substantial, especially when flying with BA. [In years past, for example, when checking in at an BA airport desk they have had the very annoying habit of requesting to see the original credit card used for buying the ticket --- which in this case would be impossible as it was lost and replaced with a new number, several months ago).

My questions are:

1. Has anyone else had the experience of requiring a conversion of a xONEx to a paper ticket simply because of a RJ segment?
2. Are there substantial advantages to a paper ticket that surpass the inability to OLCI and PYOBP? Segments after the RJ one are on IB, BA and JL.
3. Should I perform the conversion before arriving in CAI? I'm arriving in CAI on BA from LHR.
4. Should I request a conversion back to an e-ticket after I arrive in AMM?
5. Should the conversion to a paper ticket, or the reconversion back to an e-ticket cost me anything?

Thanks in advance for your advise/suggestions!