The security code in my Volkslogger is A21, and when downloading
flights the file is shown as xxxA21jx.igc when downloading directly to
the computer using SeeYou.

When downloading to a PDA using P-Strepla, the file comes up in the
format xxxXBW11.igc.

I am confused and have been unable to find why the file name is
different, or how it is assigned by P-Strepla if that is what is
happening.

Any guidance from someone who understands this will be greatly
appreciated.