Any change to the data stitch assign/append is causing issue and making the variable blank

Summary

Any change to the data stitch assign/append is causing issue and making the variable blank

Content

Team,

Has anyone started using data stitch in integrations.?  We are using them to capture the list of values for passing it to another Rest Invoke inside Integration. It's not consistent and makes the global variables blank if we try to edit the integration, so we have remove all for loop, assign data stitch and append data stitch, for it to work after multiple rounds.

Even we have any change in the global variable structure which is based on object, to add new attribute, save is failing for Integration.