No attorney shall appear in any action or file anything in any action wherein he does not appear as counsel of record. In any matter, even if it has gone to judgment, there must be a formal substitution or association of counsel before any attorney who is not an attorney of record may appear. An attorney of record shall be deemed responsible as attorney of record in all matters before and after judgment until there has been a formal withdrawal or substitution in the case.
L. R. Prac. Sup. Ct. 9