You probably need to go in programmatically too…
See the comments at the end of this. It’s for a foliage type, but it would work very similar with the procedural stuff.
Generally speaking * ALL * instanced things have a “registry” so to speak that references all the meshes being used.
How that mesh is still visible after being force deleted from the project. Well, that’s a mistery aint it?
Usually. Close the project. Delete /saved (check exactly what folders) and cause a recompile of all materials / geometry etc.
And if the mesh does not exist and is trying to be used, youll get errors in the output log.
Hope you can put some lime in the coconut.