Migration: a zero year, month, day or OperaClass id meant the value was unknown, not that it was zero. Set to null.

Repairing character-encoding corruption (mojibake) introduced during data import; the person/ensemble name itself is unchanged. Cause: ISO-8859-1 bytes were decoded as Mac OS Roman at import (0xF6 'o-umlaut' became U+02C6, 0xE4 'a-umlaut' became U+2030). Stored value "Chor, Ballett und Statisterie der Seefestspiele Mˆrbisch" is being corrected to "Chor, Ballett und Statisterie der Seefestspiele Mörbisch". Detected by decoding the stored text back through the offending codec and confirming it yields valid UTF-8. Part of a sweep of all singers, conductors, composers, characters, operas and recordings; 419 fields matched.

Repairing character-encoding corruption (mojibake) introduced during data import; the person/ensemble name itself is unchanged. Cause: ISO-8859-1 bytes were decoded as Mac OS Roman at import (0xF6 'o-umlaut' became U+02C6, 0xE4 'a-umlaut' became U+2030). Stored value "Festivalorchester Mˆrbisch" is being corrected to "Festivalorchester Mörbisch". Detected by decoding the stored text back through the offending codec and confirming it yields valid UTF-8. Part of a sweep of all singers, conductors, composers, characters, operas and recordings; 419 fields matched.