group update idindex should add a chnagelog entry

Michael Gettes  7 minutes ago
way back in this thread @mchyzer gave the following to update the IdIndex...
new GroupSave().assignName("a:b:c").assignIdIndex(12345).assignSaveMode("UPDATE").assignReplaceAllSettings(false).save()
should this trigger a changelog change causing grouper provisioner to update the gidNumber which depends on idIndex??  It doesn't do it now... but should it?  (more of a theoretical question)