anchor.diff:  		{atomic, ok} ->
   			error_logger:info_msg("Copied httpd_group table from ~s.~n", [Node]),
   			join14(Node, [httpd_group | Acc]);
  +		{aborted, {already_exists, httpd_group, _}} ->
  +			error_logger:info_msg("Found existing httpd_group table on ~s.~n", [Node]),
  +			join14(Node, [httpd_group | Acc]);
   		{aborted, Reason} ->
   			error_logger:error_report([mnesia:error_description(Reason),
   				{error, Reason}]),
  
positive.code: 		ok ->
  			join4(Node);
  		{error, Reason} ->
  			{error, Reason}
  	end.
  %% @hidden
  
negative.code: 		{atomic, ok} ->
  			error_logger:info_msg("Copied client table from ~s.~n", [Node]),
  			join7(Node, [client | Acc]);
  		{aborted, {already_exists, client, _}} ->
  			error_logger:info_msg("Found existing client table on ~s.~n", [Node]),
  			join7(Node, [client | Acc]);
  		{aborted, Reason} ->
  			error_logger:error_report([mnesia:error_description(Reason),
  				{error, Reason}]),
  