More to my last edit: I left the machine running all night Friday into yesterday and WD functioned normally, that is continuously, with all data. I turned it off overnight and this morning once again all data recorded by Davis datalogger and present in WeatherLink datalog file is missing from WD. I should note that since first reporting this problem the machine has been off and/or WD turned off and during those periods Davis continued recording and logging properly but WD lost the data during the periods the machine, WD, or both were off.
Bruce