Imported logfiles with wrong IDsite, any way to recover?

Total user error here.

I have multiple sites in Piwik, one uses the JS Tracking code to record live data while I have to import log files for the second website.

During logfile import I accidentally used the wrong site ID, importing data on top of the existing data for my JS Tracked site. Since I don’t have log files for that site is there a way I can delete the imported data without losing the original JS Tracked data?