Exporting to Illustrator

Hello there
I had read some post here on the forum with the same kind of topic. I know harmony has this pdf export option, But I will like to know wich is the right way to do this. it always shows me a black background and not vector file.
How can I export to illustrator in the right way?

If your line art is black and the default background is black, try adding a white color card to your network.