GPS Data Logger Software - BT747

All,

I normally use my desktop PC to manage my GPS logger.

During my holiday I used a laptop to download track information from my logger.

When I returned home I connected the same logger to my desktop PC again.

BT747 gave an error message that a different logging device had been connected and that the logfile BT747log.bin would be overwritten.

I am looking for a way to merge the original logfile on the desktop with the logfile on the laptop.

Any suggestions?