Sorry, I can’t share the rvt file and will take me a bit to make an example to show whats wrong so that will come soon.
I did find something interesting, though. Even though I feed Archilab’s Elements in Space node a list of spaces, it will use any spaces in the project, even overwriting the index of whatever space was in that list with what spaces are in the project.
More detail: My space input was all of the spaces from the linked instance using Spring’s collector and the element input was a list of electrical equipment in the current project. I created a space in the current project but it was not in the input list. When I ran the graph, the space list in the output had the newly created space and its elements overwriting the index 1 of the linked space list (same number parameter).