CDP Clearing Rules Rule 8 — Default Rules Past version: Effective up to 05 Sep 2021 8.6C Set-Off of Obligations Under New Purchase Contract and New Sale Contract 22 Apr 2013 to 05 Sep 202106 Sep 2021 onwards 8.6C.1 [Rule has been deleted.] Deleted on 6 September 2021. 8.6C.2 [Rule has been deleted.] Deleted on 6 September 2021.