Have there recently been changes in the Atmos partner award chart for itineraries with connections?

I had been searching for two different itineraries in main cabin over the past couple of months, both on American Airlines through Alaska/Atmos

PHX - BGR (Bangor ME USA) PHX - MTY (Monterrey Mexico)

Couple of months ago if I were to search for itineraries with connections, the pricing would come out as follows:

22.5K miles, PHX - (ORD/DCA/etc) - BGR 15K miles, PHX - DFW - MTY

now the pricing I see are as follows:

17.5K miles, PHX - (connection) - BGR 27.5K miles, PHX - DFW - MTY

Did Alaska change award charts or did they change how they go about calculating miles for different itineraries? Thanks in advance for your help!!!

PS Yes I am aware there is a nonstop PHX-MTY — ran this as a test case because I noticed the changes in pricing