anchor.diff:  		{atomic, ok} ->
   			error_logger:info_msg("Copied httpd_user table from ~s.~n", [Node]),
   			join13(Node, [httpd_user | Acc]);
  +		{aborted, {already_exists, httpd_user, _}} ->
  +			error_logger:info_msg("Found existing httpd_user table on ~s.~n", [Node]),
  +			join13(Node, [httpd_user | Acc]);
   		{aborted, Reason} ->
   			error_logger:error_report([mnesia:error_description(Reason),
   				{error, Reason}]),
  
positive.code: 		{atomic, ok} ->
  			error_logger:info_msg("Copied client table from ~s.~n", [Node]),
  			join7(Node, [client | Acc]);
  		{aborted, Reason} ->
  			error_logger:error_report([mnesia:error_description(Reason),
  				{error, Reason}]),
  
negative.code: 		{atomic, ok} ->
  			error_logger:info_msg("Copied bucket table from ~s.~n", [Node]),
  			join12(Node, [bucket | Acc]);
  		{aborted, {already_exists, bucket, _}} ->
  			error_logger:info_msg("Found existing bucket table on ~s.~n", [Node]),
  			join12(Node, [bucket | Acc]);
  		{aborted, Reason} ->
  			error_logger:error_report([mnesia:error_description(Reason),
  				{error, Reason}]),
  