Potentially increases clarity, if I haven’t misunderstood the meaning of the initial paragraph.

Existing Wording:

If the binding specifies a valueset version, then the expansion set must be derived from that specific version. This does not restrict the code system versions to be used, therefore more than one expansion set is possible.

Proposed Wording:

If the binding specifies a valueset version, then the expansion set must be derived from that specific version. This does not restrict the code system versions available for use, therefore more than one expansion set is possible.