I recently flew from Heraklion to Munich via Athens (flights Aegean Airlines 3317, 04/12/2014, and Lufthansa 1751, 07/12/2014).
The track logs for these show flights from Oslo to Copenhagen and from Amsterdam to Munich. The Aegean flight is described as a code share with SAS 1461. The Lufthansa flight does not show any code share, but the data look like Lufthansa Cityline 2303.
How can data get recorded under the wrong flight identification?