We have a chained script and when the first script is finished the login-dialogue appears again and the user Needs to 're-login'.
If you want the runner to log on to SAP before each linked script runs, choose Use individual script settings in the main Settings box, and then uncheck the ALC box for each script. (ALC stands for auto logon credential.)
you select 'all from first script'
you select 'custom' with ALC set as 'Use first script settings'