It had occurred at audax ride of 400km, during Saturday to Sunday.
*Steps*
1. Kept recording across 2 days.
2. In day 2 at the point 370km, I had stopped a recording to rest and power off the Edge without save/discard.
3. I had turned on the Edge and restart riding.
4. In the end of a ride, I had stopped recording and saved it.
*Result*
Low Training Effect and Low Training Load was displayed.
It seems to be lose the Load recorded before Step 2.
at Edge 530 for ASIA v5.50