Changes to spawned tilemap prefabs are not happening

[biggo]

Hi.

My game consists of several scenes. Each scene has a tilemap. I have replaced some tiles with prefabs - similar in every scene, and drawned them onto the tilemaps.
In my understanding, I should be able to modify a prefab, and the changes should be effectuated across every scene, right?

However, it doesn't happen. In fact, nothing happens when I change a prefab! The prefabs are just spawned with the original settings, and I can't figure out what I'm doing wrong.

I hope someone can give my some suggestions. Thanks.

[unikronsoftware]

Are the prefabs still linked correctly in the tilemap spawned ones?