The columns took the award's declared band list when it had one, so every
band the award PERMITS got a column whether or not anything had ever been
worked on it. DDFM permits 6m and 70cm; a station that has never worked a
French department on either was shown two empty columns, which reads as a
gap in the log rather than as a band nobody tried.
They now follow the bands this operator actually has contacts on for the
award. The declared list is the fallback for an award with nothing worked
yet — there, saying what the award is played on is the only honest answer
available — and the classic HF set is the fallback for an award that
declares nothing either.
Together with taking the order from the full band list, this is what puts
23cm on DDFM: the column appears because there are contacts on it.