Following the sync process tracks from 2 days were combined and the track for the first day was the log track (20-minute interval, not the 1-minute interval). I went on a 6 day hiking trip with several mile hikes on each day. When I got back home, I synced my Explorer+ to get my tracks. For most of the tracks, I got the 1-minute track record that I expected. For 2 of the tracks, I only got the 20-minute log record. Even more confusing, The 20-minute log for 8/24/2018 was combined with the 1-minute track for 8/25/2018 even though the Explorer+ had been turned off the night of the 24th and not turned on until the start of the hike on the 25th. The trail heads for the 2 days were over 5 miles apart and I drove to the trail head for the 25th. There is no track for my driving, just a straight 5+ mile jump from the end of the trail for the 24th to the start of the trail for the 25th. Either the database in the Explorer+ is corrupted or the sync process has problems. I believe it is the later as on my Explorer+ I can display the 1-minute log for the 24th. I tried uploading jpg photos of the 1-minute 8/24 track on the Explorer+ and the combined 8/24 and 8/25 tracks on my PC, but the uploads failed.