Acrobat radio buttons only return "Off" value

I am assigning numeric values to groups of Acrobat Radio Button Choices as part of an extensive survey. After using Save As to rename a copy of the original survey, I opened the renamed version of the survey using Acrobat Reader, completed the form, saved it, and then, using Acrobat DC, I used Prepare Form's Merge Data Files to Spreasheet function to create a *.csv fle to read in Excel. There the numeric values failed to display. Instead, I see "Off" as the value for all radio button responses no matter what choice was made.

I have also opened the survey in Acrobat DC, changed some values, saved the result, and from Acrobat DC used the Tools' Prepare Form and Merge Data files to Spreadsheet options. If I change a value during the process, that correct numeric value is displayed. Any response that was always a default choice is still returning "Off."

Any ideas? Attached is the survey without the text for the survey questions and the csv file.