Automatic result-cleanup?

is there an automatic cleanup of the wpt-results?
I found a lot of results deleted from the results-folder after two weeks. The tests were triggered through WPT Monitor-jobs so the results are still listed in the monitor but if I click to the “Show WPT result”-icon I get a “Test not found” in wpt.
Thanks in advance, Nils

Not that WebPagetest itself does. Do you have a script that cleans up old tests on a cron job or anything like that?

Sorry, my fault!
I forgot that I upgraded wpt from version 2.2 to 2.3. So I have overwritten the whole results-folder (fortunately I backuped the old version…).