[2024] Why Zammy and Sanctum of Rebirth dungeon share progress with ED1,2 and 3?

With the new boss incoming, it sucks to do it halfway through just for you to discard because you want to do other boss. Recently, I do sanctum of rebirth Hardmode and got all the way to Nakatra. But Nakatra is just way too hard so i want to take a break from doing it again. I went to do some ED run and they ask me if I want to discard my progress of Sanctum of rebirth.

I could see the reason why ED1,2 and 3 share progress because they are like a "package" when they released, but for Zammy and Santum of rebirth to share progress too, that's weird. Both of them released on different date, was not advertised together, and are in a different part of the lore.

In my opinion, dungeon boss itself should not share progress with other dungeon boss as they are not related and this changes could be a big Qol for the new PVMer. I hope J-Mod could take a look at this and consider changing it to not share progress. Sorry for my bad english.