Can We Import Our Historical Timesheets From Another System?

Of course. Aside from importing all the supporting tables, there is a timesheet import function in TimeControl links that does specifically this. You’ll need to make sure all the employee information, charge code information and project information already exists but then the import is quite easy. There is a blog post on this (at: blog.timecontrol.com/?p=142) as well as an Excel template to help you prepare your data for the import.