413Pleadings—matters arising after start of proceeding

413 Pleadings—matters arising after start of proceeding (1) A party to a proceeding may plead a matter that arose after the proceeding started. (2) A party to a proceeding may plead facts giving rise to a cause of action that arose after the proceeding started only— (a) if it is not unjust to any other party; and Rule 414 (b) with the court’s leave. Note 1 See r 502 (3) (Amendment—of documents) about including a cause of action arising after a proceeding is started. Note 2 See also r 104 (Ground of defence arising after defence filed etc), r 467 (Counterclaim—defence arising after answer) and r 481 (3) (Pleadings— after reply). Note 3 Pt 6.2 (Applications in proceedings) applies to an application for leave.