public function run() {
    	$time1 = microtime();
    	Pap3Compatibility_Migration_OutputWriter::logOnce("Deleting migrated data from existing PAP4 tables<br/>");

    	try {
    		$this->deleteTable(Pap_Db_Table_Campaigns::getName());
    		$this->deleteTable(Pap_Db_Table_CommissionGroups::getName());
    		$this->deleteTable(Pap_Db_Table_CommissionTypes::getName());
    		$this->deleteTable(Pap_Db_Table_Commissions::getName());
    		$this->deleteTable(Pap_Db_Table_UserInCommissionGroup::getName());
    		
    		$this->deleteTable(Gpf_Db_Table_FormFields::getName());
    		$this->deleteTable(Gpf_Db_Table_FieldGroups::getName());
    		
    		$this->deleteTable(Pap_Db_Table_Transactions::getName());
    		$this->deleteTable(Pap_Db_Table_Clicks::getName());
    		$this->deleteTable(Pap_Db_Table_RawClicks::getName());
    		$this->deleteTable(Pap_Db_Table_Impressions::getName());

    		$this->deleteTable(Pap_Db_Table_Banners::getName());
    		
    		$this->deleteTable(Gpf_Db_Table_FieldGroups::getName());
    		$this->deleteTable(Pap_Db_Table_PayoutsHistory::getName());
    		$this->deleteTable(Pap_Db_Table_Payouts::getName());
    		
    		$this->deleteTable(Gpf_Db_Table_Currencies::getName());
    		$this->deleteTable(Gpf_Db_Table_MailAccounts::getName());
    		
    	} catch(Exception $e) {
    		Pap3Compatibility_Migration_OutputWriter::log("&nbsp;&nbsp;Errror: ".$e->getMessage()."<br/>");
    	}

    	$time2 = microtime();
		Pap3Compatibility_Migration_OutputWriter::logDone($time1, $time2);
    }