I'm in the middle of Migration fixes of InfoPath forms and Nintex workflows. We used _vti_bin/nintexworkflow/workflow.asmx to call 2 web methods, GetRunningWorkflowTasksForCurrentUser and Process Task Response3 from InfoPath forms to complete an approval task from form. When we migrated form SP2010 to SP2013 these 2 workflows not returning any results when the task is approved through form is approved. I could not use the web service call from workflow because I'm unable to send the approver's credential to that action. Please anyone know how to fix the issue. Is this 2 methods are obsolete in InfoPath web service call.