To update or change the WSDL associated with your existing SalesForce import jobs, login to MetaLocator and click the Background Processes icon in the toolbar:
Identify any jobs that are currently set to connect to SalesForce by looking in the Type column:
Click the job name to open the Job Edit form.
Specify one of the following values for the partner_wsdl option to use API Versions 55 or 50 respectively.
Important, be sure to update the partner_wsdl not the wsdl option.
Click Save in the upper right. Your job has been updated accordingly.