full resolution includes one bus for corsica (bus "2306"), that, when simplifying, gets aggregated to Italy "Festland" (bus "2343") which we do not want to happen.

The bug is in the script "simplify_network.py", ie. happens in the step when going from elec.nc to elec_s.nc. The function where the bug happens is "simplify_links", where chains of links (HVDC lines) are aggregated to one representative link (HVDC line).