Does Portpins.h conflict with other Arduino projects?

to make the Music Shield world, it is necessary to replace the portpins.h file with a new one.

Does replacing this file conflict with other projects that I might use my Arduino for? Do I need to swap my old portpins.h file back if I need to use my Arduino with another shield?

Till now, there’s no report about the conflicts, as we just added some more defines in this file.
It should be ok.

Regards,
Steve