Joerg Ewald writes:

We just released software version 19.1 for the Volirium P1. This version fixes a
bug in 19.0 where in some cases, the synchronization between internal and
external memory failed, resulting in loss of IGC and/or Google Earth files.

To ensure that you have a valid recording of all your flights, we highly
recommend you update your Volirium P1 / Connect before your next flight.