88 Any adaptation of a work also contains the original work. From a legal perspective, the adapter can only license the changes they have made; the unmodified parts of the work continue to be licensed by the author of the "original" under the original licence. This means that the adapter cannot relicense their version of the work and place it under a different licence with all its components.
89 The CCPL4 contains a rule for this: the user of an adapted work is only bound by the (latest) "adapter licence" that was attached to this version of the work. Previous licences that were valid for earlier versions of the work become invalid.
90 This applies at least as long as the editor complies with the provisions of the SA module and chooses a permissible editor licence for their version. However, if this were not the case, e.g. because the editor chooses a CC BY-SA-NC for their version of a work that was originally licensed under CC BY-SA, they would be in breach of the licence obligations. This would result in the licence for their version of the work being invalid until the infringement is remedied due to the "Automatic Termination Clause"; see Section 6, margin note 11.
Creative Commons License
Open Access Kommentar, Commentary on Section 2.a.5.C. Subsequent Recipients B: SA and NC-SA only: Additional Offer by Licensor – Modified Material is licensed under a Creative Commons Attribution 4.0 International License.
