Ugh, it has been awhile (never availability) so had never heard of this lunacy until now. Been doing the 12AM CST nightly wake up and tonight this married segment thing appears to be hitting me (I swear I probably triggered it myself by searching so much, as every day is open but the day I want:

Trying book two people in T from BWI to SCL, via BWI-MIA-SCL. Expected each one way ticket to be 30K. Boy am I naive!

• First Try - All 30K options through old booking tool are 2-stop, long layover itineraries in JFK / LGA / ATL. Normal search on new booking tool for my itinerary shows as costing 57.5K each one way for my preferred routing.
• Second Try - Search using old booking tool for multi-city itinerary (forcing the legs I want). It shows each leg available at the MileSAAver rate (12.5K for the domestic, 30K for the international) for a combined total of 42.5K. Lets me enter all my information, and when I get to the final page to complete, it gives a "flight is no longer available" error and re-selecting those flights now prices at 75K.
• Many More Attempts - Same thing over and over, it is available in multi-city but not confirmable on the last page.
• Final Attempt (so I can go to bed) - Book each leg I want one at a time through old booking tool as its own reservation (one for BWI-MIA at 12.5K each, one for MIA-SCL at 30K each). I put them on hold and am illogically hoping I can call and have them combine the held PNRs into one reservation and get it re-priced based on the award chart.

Every time I try and use my miles, I hate them more.