1.4.2  These IBU Anti-Doping Rules do not apply retroactively to matters pending before the ADR Effec-tive Date, save that:  1.4.2.1  Anti-doping rule violations taking place prior to the ADR Effective Date count as ‘first violations’ or ‘second violations’ for purposes of determining the Consequences under Article 10.9 for anti-doping rule violations taking place after the ADR Effective Date.1.4.2.2  With respect to any anti-doping rule violation case that is pending as of the ADR Effective Date and any anti-doping rule violation case brought after the ADR Effective Date based on an anti-doping rule violation that occurred prior to the ADR Effective Date, the substantive aspects of the case will be governed by the anti-doping rules in effect at the time the alleged anti-doping rule violation occurred, and not by the substantive anti-doping rules set out in these IBU Anti-Doping Rules (unless the hearing panel determines that the principle of lex mitior appropriately applies under the circumstances of the case), while the procedural aspects of the case will be governed by these IBU Anti-Doping Rules.