Autofill occurs whenever the Duration changes. You'd have to go through each entry and change the Duration, i.e. -.1 then +.1. The only other idea is to export your data then re-import it (Backup first!!!). Autofill can be fired during the Import Wizard process as well.
Thanks Neal, unfortunately I couldn't get the ex/im to work. epxrt was fine, but the import wizard wouldn't recognize the date format so it ended there.
Another question I hope you can help me with. Does the "Logbook Pro Standard Flight Log" option for printing the logbook support a signature image? I've followed the help instructions but without success. Seems to work fine for Jepps format.