Unfortunately, I can't load the save because it was made in an experimental version of the game, and I only support the official release (currently v2.0.69)
Although I can clearly see why that connection was selected to be removed.. it's definitely one of those shallow triangles, where the nauvis-fulgora connection appears nearly parallel (or close enough) to the nauvis->senestella->fulgora connection
There should be a setting to disable the change in cases like this (or not? What happened to v1.0.13? Must have forgotten to upload that one to the mod portal last night), but anyways, I have updated the logic to prevent connections from being removed, when they involve the starting planet (Nauvis by default). Testing with just this mod and Metal and Stars, I was able to recreate the issue, and confirm that it is fixed in v1.0.14