Can I export Unity project to same XCode project file?

I have a Unity project that is being exported to an iOS project for XCode. Every time a change is made the project is re-exported and sent to me. I then have to re-add all of the Frameworks, etc every time the Unity is updated.

Is there a way to pull files out of the exported project and dump them into XCode? Or even better can the Unity be re-exported to the same project?