The rule change was in response to Mr Craig's $1.9 million loan to the Conservatives ahead of the 2011 election, which he wrote off as a donation after the election.
Mr Craig stepped down as party leader after admitting inappropriate interactions with his former press secretary Rachael McGregor.
He has ruled out making a return as leader until he has resolved several legal battles. One of those cases, a defamation counterclaim made against him by former board member John Stringer, was partly struck out last week.
Mr Craig remains involved in defamation claims against Mr Stringer and blogger Cameron Slater.