The issue seems to be that there are commas in the column. I added a comma to the first row's name in the Big Class data table
txnelson_0-1687616439794.png
and then saved it as a txt file using your export settings, and what I got was
txnelson_1-1687616525076.png
What I suggest is for you to separate each comma field into separate columns
txnelson_2-1687616654569.png
Set your export preferences to
txnelson_3-1687616719850.png
and you will get
txnelson_4-1687616844968.png
Jim