I have seen many articles in reputed impactor journals which have used only CFA before running multilevel SEM to test multilevel hypothesis on nested data. for example Hirst, G., Van Knippenberg, D., Chen, C. H., & Sacramento, C. A. (2011). How does bureaucracy impact individual creativity? A cross-level investigation of team contextual influences on goal orientation–creativity relationships. Academy of management journal, 54(3), 624-641.
however, many researchers used multilevel CFA before running multilevel SEM to test multilevel hypothesis on nested data. why there is contradiction and is it allowed to use simple CFA for nested data before running multilevel SEM to test multilevel hypothesis. Any authentic reference ?