Previously installed: comentario_3.11.0-next-46e72102_linux_arm64.deb Updated to: comentario_3.12.0_linux_arm64.deb That lead to /etc/comentario to be reset to defaults. I had expected that I get asked whether I want to overwrite files in /etc/comentario. See also: https://www.debian.org/doc/manuals/maint-guide/dother.en.html#conffiles