The only reason they did it is the same reason they did the same to non partner airlines years ago. Costs and issues involved with charging other carriers when things don't go to plan and someone has to pay for the needed service recovery.

BA has said that they will not interline even their own flights if issued separately... eg CDG-LHR, LHR-JFK. You'd have to pick up your bags at LHR.

But CX will interline between KA and CX flights even issued on separate tickets, and on separate PNRs. CX will interline to other carriers if all the bookings are on the same PNR, eg Amadeus when on separate tickets.

Don't know what the others are gonna do.

This is a huge fail on One World's part.

Mixed redemptions are a plenty good reason. As are added internal flight segments after the TATL or TPAC flights are settled.

I would not say that the latter is a good reason.

It is possible to change the original flight to include the internal flight segments - it may be cheaper to book separately, but I do not see that it makes it a good reason why the airline should give the benefits of a through ticket

I suspect because too many people (in BAs mind) were for example flying.

Disc Y LHR-xxx
Business xxx-LHR-JFK

in order to take advantage of much cheaper BA fares on the continent (and reduced APD on the transit).

Isn't there even a bigger scenario.

Airlines the world over, would like to see the end of "checked bags".
When you think about the cost involved in transporting your bag - checking it, transporting it, returning it to you. Mega, just mega cost, all that equipment, all those people, all that weight.

Roller aboard is the desired outcome, specially for the clients that are leapfrogging from country to country (chasing low cost fare options or adding award segments) and multipling the "bag handling" cost factor.

It looks like OW's 'Seamless travel' is coming apart at the seams. :D

Not sure what you are exactly trying to say. Are you suggesting that airlines might be able to noticeably reduce or phase out checked baggage altogether (and thus avoid all those costs which you point out) by significantly inconveniencing the small minority of passengers who are connecting across different PNRs, when in reality the majority of checked bags likely belong to passengers on plain vanilla PNR/tickets?

Careful of what you ask for.
Then airlines would have more empty cargo holds.
Then overhead bin spaces would be like gold.
Then they will think let's make some more $$$$ let sell priority boarding and sell checked bags for all the empty space below.
Then we have what we call 'Ryanair'
The lets make pax stand lets remove lavs lets .....
Say if all airlines buy that idea, Boeing will convert all planes to freighters and just keep squeezing people in like Tokyo metro during rush hour.

And just to add to the fun, Russians did explored that concept where you drop your own bags in the plane. It's called the Il-86.:D

Now back to the topic, I would say they just simply want to avoid the liabilities of misconnects.

There are two aspects of this change that are irritating to me.

I booked an award trip to Asia using BA Avios for travel in a few weeks. AA-CX-CX. It is a three segment trip, but all three segments were not available at the time of original booking so they were booked one-at-a-time as they became available.

Since BA charges Avios by segment now, it wasn't a problem.

So I have three PNRs because that was the only way to book it, which wasn't an issue under the prior rules. I am now being penalized due to the lack of availability of award space.

Secondly, the rules in place at the time all segments were booked was that they would check the bags through. AFTER booking, they are changing the rules retroactively. That's slimy.

I checked-in for a separate revenue ticket on AA last week and asked if AA would still check my bags through to CX on a separate PNR. Nope. Was told the system will no longer allow them to do this and it cannot be overridden.

Great.

Has anyone had experience of what happens if you have multiple tickets from multiple carriers on one PNR from an OTA? It would be a nuisance and not really what you or the airline want you to do but, if it works, it would serve them right!

This is strange because AA's statement to the media is that they will continue to check through to other OW carriers on separate tickets:

http://www.ausbt.com.au/oneworld-air...ecting-flights

I'll let you know on Friday when I check-in with AA.

I wonder what happened on Friday.

At least Cx will still do Seperate pnr's and Cx family of flights