Part VII · Adversary Proceedings Rule 7023. Class Proceedings Version effective 2010 Rule 23 F.R.Civ.P. applies in adversary proceedings. added in current removed in current Compared to current version (2025). Rule 23 F.Fed. R. Civ. P. 23 applies in an adversary proceedings. (As amended Apr. 2, 2024, eff. Dec. 1, 2024.)