Problem with exporting illustrator file

[cimomomi]

Hi! I used the pen tool and pathfinder to cut shapes when I was creating my project in illustrator. But when I finished my project and saved it on my computer, I discovered the problem. Every line created with the pen tool and pathfinder is now visible. I tried to change the export settings, but nothing happened. This project looks fine in illustrator. What's wrong and what should I do? It's my first time in illustrator 

[Monika Gause · Accepted solution]

You could select one of those artworks and in the Pathfinder panel hit Merge (in the bottom row)

[cimomomi]

It really worked! Thank you so much!!!