This is a simple datapack that modifies the "Those Were the Days" advancement.


There are many datapacks that add new structures, and some of them use the bastion structure type to spawn them. This will cause the players to get the bastion remnant advancement, even if the structure is completely different.

I've modified the advancement to require the player to be in the nether when triggering the advancement, so any bastion type structures spawned in the overworld or end will not trigger the advancement.