When I tried that, and updated the table of contents, it gave me just one entry (30-Ice and Rain Protection), which uses the heading ATA CH Normal. But there is another one using that ATA CH Normal so not sure why that one isn't showing up.

My TOC code looks like this: {TOC \o "1-1" \n 3-4 \h \z \t "Heading 2,2,Heading 3,3" \f} and I added the macro.

Not sure what I'm doing wrong, although I am concerned with the set up of the Word document. I didn't create it, just inherited it.