Still confused (General)
For clarification: Do you find the code in the file on the server or in your unzipped copy on your computer?
I find the code in the file on the server. I just did a code compare of the file on the server and the file from the 2.3.7 folder and they were exactly the same.
Please check the content of the mlf2_settings-table.
Ok I found the mlf2_settings in phpmyadmin and I see no double entries?