Yes, there are plenty of limitations in SmartConsole related to logs. Some of them are solved in SmartView, but not all.
Assuming you have all logs available and can be recovered (from backup, NAS, tapes), you can create little script. Simply interate over *.fwlog files and use fw log command to export logs. Then do grep and find relevant time.
Or even faster, search for ruleID of cleanup and then grep for specific traffic.
I cannot think about any other solution with current SmartConsole/SmartView.
Kind regards,
Jozko Mrkvicka