(1) A member of a general or special courts-martial shall not be absent or excused after the accused has been arraigned except for physical disability or as a result of a challenge or by order of the convening authority for good cause.

    (2) If a general court-martial is reduced below 8 members, the trial may not proceed unless the convening authority appoints new members sufficient in number to provide not less than 8 members. When the new members have been sworn, the trial may proceed after the recorded testimony of each witness previously examined has been read to the court-martial in the presence of the military judge, the accused, and counsel.

    (3) If a special court-martial is reduced below 4 members, the trial may not proceed unless the convening authority appoints new members sufficient in number to provide not less than 4 members. When the new members have been sworn, the trial shall proceed as if no evidence had previously been introduced, unless a verbatim record of the testimony of previously examined witnesses or a stipulation of that testimony is read to the court-martial in the presence of the accused and counsel.