Support better audit traceability by securing immutable configured structure definition on frozen model version
Enhanced content immutability experience for Configured Structure. Content immutability: edit instance. When user operates instances whose evolution effectivity includes frozen or released model version, edition of instances attributes is not possible.
Content immutability: forbidding frozen or released version selection. When user selects model versions to be "worked under", system does not allow the selection of frozen or released model versions.
Content immutability: instance split. System does not allow to apply a new variant value/option on a frozen or released instance, and therefore splits the instance to apply the new variant value/option as variant effectivity together with the active model version as evolution effectivity.
