Such amendments will come into effect on the date specified by the Executive Board.1.4  Transitiona l provisions:Subject to Art icle 1.4 of Cha pter C of this  Integrity Code:1.4.1  This Int egrity Code wil l apply in ful l to all cases where the violation occurs aft er the Effect ive Date.1.4.2  Any ca se pending pri or to the Effe ctive Date, or brought after the Effective Date but based on a violation that  occurred prior to the Effective Date, will be govern ed by the Fo rmer Rules in  force at the time the violat ion occurred, save that:1.4.2.1  the proced ural rules set out in Chapter D or  Chapter E (as appli cable) of this Integrity Code wil l apply in place  of the procedural rules in forc e at the tim e the violatio n occurred; and1.4.2.2  the Disciplinary Tribunal an d/or the CAS may decide to apply subs tantive provisions of this In -tegrity Code to th e case where doing so benefits the Pa rticipant charged with the violati on, based on the doctrine of lex  mitior; and 1.4.2.3  all such  cases will be han dled as from th e Effective Dat e by the BIU on behalf of the IBU, in accord-ance with the foregoing provis ions.