I poked around a bit and couldn't find anything relevant. I assumed you did the same.
Perhaps its saved with the profile itself? Only way to see is to wipe and re-import a saved profile...assuming you've not done that already.
Sleuthing around a bit more, it looks like the Data Log Setting and Analyze Data chart information is held in C:\ProgramData\aquasuite-data\aquasuite_db.database.
At least I see the Data Log title and the Analyze Data saved chart names in the database.
I think you need to go to Data Log, Automatic Data Exports and ADD a saved location if you haven't.
I believe that function is for exporting data, not saving the setups.