copying rules file(s) instead of writing new one

core/PhysiCell_rules.cpp

@@ -1933,6 +1933,8 @@ void parse_rules_from_pugixml( void )
 
 			if( done == false )
 			{ std::cout << "\tWarning: Ruleset had unknown format (" << format << "). Skipping!" << std::endl; }
+			else
+			{ copy_file_to_output( input_filename ); }
 
 		}
 		else
@@ -2368,11 +2370,6 @@ void setup_cell_rules( void )
 	display_behavior_dictionary( dict_of ); // done 
 	dict_of.close(); 
 
-	// save rules (v1)
-	std::string rules_file = PhysiCell_settings.folder + "/cell_rules.csv"; 
-	export_rules_csv_v3( rules_file ); 
-
-
 	return; 
 }
 

core/PhysiCell_utilities.cpp

@@ -376,7 +376,7 @@ void copy_file_to_output(std::string filename)
 	char copy_command[1024];
 	sprintf(copy_command, "cp %s %s", filename.c_str(), output_filename.c_str());
 	std::cout << "Copy command: " << copy_command << std::endl;
-	system(copy_command);
+	(void)system(copy_command); // make it explicit that we are ignoring the return value
 }
 
 };