I setup 2 simple surveys both using the same "service" (that is, the second one uses the first one as a feature service. The second one has the Inbox activated so it can see the submissions sent from the first.
This works, the second survey gets results in the Inbox and can view and edit them. However, the select_one question always appears blank in the second one, even thought it was filled in the first one.
This looks like a bug in survey123. Is it?
First survey:

second survey:

In the Demo I first fill out the survey and submit it. Then I go to the second survey, to the Inbox, refresh where I see the survey I just submitted, then Edit. I can see the value I entered for the number, but the select_one question is blank.