I had completely missed that. It’s great news. Plan Builder insists on slotting in all 3 phases - base, build and specialty - into the available time, squeezing each phase too much for my use (which should be a ton of base and a bit of build). While this has the advantage of yielding shorter cycles with more frequent rest weeks, it does not give me what I need.
I’ll re-do my winter schedule now. Remains to see what will happen if/when I insert an extra rest week somewhere in a plan block.