Flights not logged in DJI GO 4

[Ron Caballero CAP]

Something strange happened to me this morning. I few two missions with one battery and then changed to a second one and flew a longer one. The longer flight came up as logged, but the two earlier ones did not. Has anyone else had this problem? Does anyone know why this might have happened...AND how to avoid tthis happening in the future. I cannot afford to lose hours being logged.