How to change 'Reference' to unassociated tests?

I think I understand your issue now. You’re saying that although auto-sync is enabled for the API, the body parameters aren’t updating automatically, right?

Currently, this is the expected behavior. I’ll log this as a feature request.

For now, the workaround is:
After modifying your API, go back to the step and click:

  1. “Auto-generate” → “Reselect example”
    OR
  2. “Auto-generation Preference”

Hope this helps.

Thank you so much!