https://www.reddit.com/r/pokemon/comments/t2pgfk
Yes, I'm pissed off about this and will not stop shouting about it.
In my BD, I bred a bunch of mons (Gen-I/II/III starts, Turtwig & Chimchar, Scyther, etc.) for the express purpose of HOME-ing over to my SP to help in my playthrough there (just like I did with Moon, Ultra Moon, and Shield), and in my SP I went only as far as beating the 1st Gym and getting all the Mystery Gift limited-time stuff, and then stopped playing with the intent on resuming once I can transfer those prepared 'mons over.
At this rate, my SP is going to sit there unplayed, forever and ever