always delete old interval stats when additional tests are enabled

code/CLI.py

@@ -168,6 +168,8 @@ class CLI(object):
                                 self.args.debug)
 
         # Load PCAP statistics
+        if self.args.extraTests:
+            self.args.recalculate_delete = True
         recalculate_intervals = None
         if self.args.recalculate_delete:
             self.args.recalculate = True