Reviewing a television series box set, I've come across the following: the box set just has the rating (so no rating details), whereas the two keep cases have rating and rating details (which are the same for both).

Is it allowed to enter rating details for the box set (copied from the keep cases) or should I leave that empty?

A I said, the rating details would come from the keep cases contained in the box set.
No thin air here....

Btw. that was very fast 

Agree with bigdaddyhorse