17 C.F.R. § 12.400
Scope and applicability of rules
The rules set forth in this subpart are applicable to proceedings forwarded pursuant to § 12.26 (b) and (c) of these rules. Except as provided in §§ 12.106(e) and 12.403(b) of these rules, the rules set forth in this subpart are not applicable to proceedings forwarded pursuant to § 12.26(a) of the Reparation Rules.