We‘re aware of this limitation, it‘s the same with e.g. Pearl Jam / Temple of the Dog setlists. Unfortunately it‘s currently not possible as ‘@Song‘ and ‘@Cover‘ is exactly the same, and the value that gets displayed, either song or cover, will be displayed based on band members (or ex-members) only. We hope to extend this in the future for related bands as well. So technically there‘s nothing wrong with putting ‘@Cover‘ in there.
Hope that explains the problem
sorry again