when I go to the site, they are not there.
If the FR610 has not been used for a long time, and the battery was fully discharged, the time may have been reset to something like 1/3/2007. If you'd not used the GPS, time would not have been updated to the correct time if you'd done only indoor activities.
Have you tried looking right at the end of all your activities, i.e. your earliest activities?