Hello everyone.
I have a Survey123 form where users can subit a case review request; this form also contains the case review fields (currently hidden) where someone else would ideally fill the response to the case review. These fields are hidde because I created a second survey that connects to the same feature layer, but when I submit, it creates a new row instead of appending it to an existing record (which makes sense):

I need a way to select, in the second survey, which record I want to update from the original submission survey and have the response appended to it. I have looked into the Create Relationship Class workflow but I am not sure how to relate the GUID/Global ID from each survey, how to even set that up, or if that is even the way to go at all. Thank you for your help!