noodles101's setlist.fm

You should not have deleted the cover tags because they were not assigned to the correct album afterwards. All the songs were known as covers, so it was easy to have the autocorrection do its work.

Because I put the cover tag back on

Why did you erase all the cover tags in https://www.setlist.fm/setlist/manfred-manns-earth-band/2018/volksbank-brawo-buhne-braunschweig-germany-73eb2a65.html

When adding a festival with the same name in the same city that took place in previous years you should have clicked this festival so it gets linked on the same page as a different edition (E-tropolis Festival)