Hi R4v3n5,
I hope you're doing well. You are getting bit by restring, this is relatively common. You basically have to adjust the restring settings on your board to allow your library settings to win and take effect.
For a full explanation see this blog post:https://www.autodesk.com/products/eagle/blog/what-you-didnt-know-about-eagle-restring/
Let me know if there's anything else I can do for you.
Best Regards,
Jorge Garcia
Autodesk Support