Hi John.
As you expected, purging older items should move the start time of the timeline forward. Could you answer a few questions for me?
1) What version of WinGate?
2) What database are you using (Access, SQLLite)
3) Does anything happen when you purge?
4) Could you please enable debug logging on the Timeline, attempt a purge and send me the contents of the log?
Also, you might want to open a support ticket by emailing
support@wingate.com, that way it can be tracked and dealt with better.
Thanks
Aaron