Well, I'm a bit shocked by your problem. If you were traveling from Brazil to the UK under the same PNR and, apparently, you got the points for the leg operated by IB, I don’t know how it’s possible that they didn’t credit the points for the leg operated by BA. In principle, they “go together”. (… but points at BA sometimes are credited later than at IB.)

I am an Iberia Plus cardholder since more than 10 years ago, and what I can tell you is that, even if in the past they were more efficient, they give you the points without problems, if your account was not properly updated. The only thing you have to do is following the rules.

1st rule: Any claim for pending points on IB-coded flights (except IB5xxx, which is Clickair; and IB7xxx, which is Oneworld and other codeshared airlines) are now made exclusively through the website. You only have to fill the data they ask to you. For IB5xxx, IB7xxx, or points earned in any other IB Plus airline (Binter, Mexicana, AA…), it’s done through the Iberia Plus centre. The points regarding any other partners (hotels, car hire…) must be claimed directly to the partner through any of the e-mail addresses that IB Plus shows in their website.

2nd rule: If you live outside Spain, you have to contact the Iberia Plus centre of your country of residence. Some of them have been transferred to Spain. Check it out in their website.

3rd rule: In order to claim pending points:
- remember that you have 6 months in order to ask for them
- use the normal mail (not e-mail / fax) to contact IB and send it ONCE: explain briefly who you are (name and IB Plus number), and what happened (claim of X points for a the flight IB7xxx). Attach:

(a) a copy of your itinerary (see www.checkmytrip.com or your email). As an alternative, you can also copy and paste the e-ticket itself, that the issuer sent to you at the time of the purchase. For instance, this is what IB sends to me each time I buy a ticket. (Some data was substituted by "xxxxxx".) Sorry for the low quality of the copy and paste, the words are not aligned.)

As you can see, I put in bold some key data: PNR, code of the fare, class of travel, FQTV number, number of the e-ticket...

(b) also attach a copy of the boarding passes, where the electronic ticket number appears.

Like this it should work. I think that you are missing the ticket (or the receipt of the e-ticket). As the flight was operated by BA, IB cannot access the data without having it, even if the boarding pass shows the e-ticket number. (Recall that IB needs your PNR and so on to know which class you were flying, and all this info is shown in the e-ticket receipt.)

Good luck. In principle, they take 30-40 days to update your account when the claims are not done automatically through the website.

GATO.

ps: by the way, take your boarding passes. Bellow your name, does the boarding pass shows "IBXXXXXX", being XXXXXX your IB Plus number? If it appears, then for sure you will get the points. If not, that's why the points were not credited: the computer did not recognised you as an IB Plus cardholder. My advice it that you write the IB Plus number at the time of the purchase. Being the IB Plus card number saved with your reservation, you can be sure that you will get the points.