Updating to 2.2: how best to replace scripts?

Hello John:
In the process of updating my v2.1 to v2.2, I’m not sure how best to replace the necessary scripts (Recent, End Recent..., etc.) — can I simply import these from my copy of v2.2? If I do that, do I first delete the existing scripts? Any help appreciated.
Yours,
Jim Recht
In the process of updating my v2.1 to v2.2, I’m not sure how best to replace the necessary scripts (Recent, End Recent..., etc.) — can I simply import these from my copy of v2.2? If I do that, do I first delete the existing scripts? Any help appreciated.
Yours,
Jim Recht