miles more friends question

Here's an odd one. I've recently had some friends fly who joined the flying club on my Miles More Friends system.. but this is what's shown up in my account?
XX Apr 2007 Member Recommendation Bonus LHR-EWR XXXXX 1,000
XX Apr 2007 Member Recommendation Bonus EWR-LHR XXXXX 1,000
XX May 2007 Member Recommendation Bonus LAX-LHR XXXXX 7,500
Anyone know why I get points for both legs for one trip, but only for one leg on the other?
The first two are for the same person who fly Economy, the second one is for someone else who flew PE
XX Apr 2007 Member Recommendation Bonus LHR-EWR XXXXX 1,000
XX Apr 2007 Member Recommendation Bonus EWR-LHR XXXXX 1,000
XX May 2007 Member Recommendation Bonus LAX-LHR XXXXX 7,500
Anyone know why I get points for both legs for one trip, but only for one leg on the other?
The first two are for the same person who fly Economy, the second one is for someone else who flew PE