Rick,
I have been with AOPA 30 years and this comes as no surprise to me...they make decisions like that from time to time, so about 10 years ago I stopped relying on the AOPA planning system. Just too unreliable for me after the 2nd or 3rd time they changed or cut planning services.
Anything "free" like that is just too unreliable in the long run, IMHO. To me, it was a "nice to have" thing with the $25, 30, 39, 45, 60 dollar membership over the years. (They also cut out the printed AOPA Airport Guide, which I really liked to keep in the plane for when batteries died or with power/cell outages).
I now plan on the iFly and save all my routes here. Soon, when SkyVector works to transfer plans, that will be another place to rapidly plan and keep flights we do over and over.
I am sorry it is being cut from our membership as well...the next thing to go will be the magazine and we will have to just look at it "online." (Hope not!)
Best wishes, Mike N714AJ