mdatab

With version 3.60 the problem seems to be solved.

Just installed the new firmware version 3.50 and the problem with the disappearing pocket query still exists.

Ah, thanks for this report. I experienced exactly the same issue a few days ago and had a chat with Garmin. They forwarded it to the developers. I also explained the issue in the gpsrchive forum (see the thread here) but it couldn't be reproduced by other users. In any case, please keep us informed.

Yes, and I really hope that the improvements will finally come to the GPSMAP 66s as well.