I’ve accidentally figured out how to get to old time sheet data. It happened when I tried to arrow back from January 2010 monthly timesheet view to December 2009 and had nothing showing for any months before January. So, while in “Week View”, I clicked on “select a week” icon and picked a week in the middle of December. When I clicked on “monthly timesheet”, there was all the month’s data for December. By selecting a week in the middle of the month of interest, I was able to get my month’s data.
I hope this helps someone,
P.S. Hopefully in the next version, all the times in the start and stop fields will be rounded up to the nearest minute. I found that if I start and stop several projects during the day, I can be missing several minutes from my time. For now, I go back if I see a gap between tasks and fix the times.