Comment by ZeroGravitas

Their guidelines on what gets its own work, and what doesn't, are here:

https://openlibrary.org/help/faq/editing#works-special-cases

So an abridged or bowlderised or annotated or illustrated version are collected under the same work, even though people might have good reasons to want one over another (the language used and the specific translator being just two important attributes)

But summaries or adaptations or plays and screenplays are not.

There's always gray areas, but note the edition info isn't lost, it just lives in a subordinate position that is linked directly from the work.