I have this exact issue - second trip window opened, but could only book one day (first trip is 8 days, but only made 7 days of FP, confirming that
MDE counts the number of days from the first trip and simply ignores the number of days, but not the existence of the second trip). I sent an email on Monday night to
george.kalogridis@disney.com at 10pm. At 10am on Tuesday I got a phone call from DVC guest relations (I am a DVC member and that was included in my email).
I had some resolution with a cast member earlier regarding manually booking FP to match up to others on the trip (also included in my email). She was very nice and offered some anytime FP for me to help with the fact that I wouldn't be able to 1. Add 4th or 5th FP on park days on my first trip, and 2. the FP on the second trip are non-modifiable. Which I think is a workaround and won't completely solve my issues, but it does sound like they are working on it.
When I explained that I had read about this issue and that I wasn't the only one (thanks to Dis) she did say that people should be emailing in - the more that do, the more attention it should receive, and it sounds like they are getting the message.
I don't think this is intentional - if it were, they would have changed the policy on the website. My reading of the policy (and I said this to the Cast Member on the phone) is that for every separate stay onsite (with space in between) AP holders should be allowed up to 14 days of FP. And that the language that is written in their policy is up for interpretation (is it 14 days of FP per 60 days? or is it 14 days per trip?) and that clarification is needed. She agreed...not sure if that goes anywhere.
At this point, for me, I think I've done about as much as I can do to be ready for the two. Will it be a little less than magical - probably, esp if I have to stand in line for guest services to get more FP on a park day (and explain it each time). Will it ruin the trip, no.
IT is great - when it works....