After importing files into bcAdmin their time stamp differs exactly one hour from the correct recording time. That is due to the fact that the FAT file system on the sd-card is always interpreted in the current local time zone. If you have import recordings created for example within summer time and import is happening in winter time, you will see the timestamp being offset by one hour. So always make sure that timestamps are correct after importing.
A fix is rather simple: bcAdmin allows to shift recording times as well as session times by an user choosable offset. Set that to one hour and all time stamps are correct again.