export idml from indd and then convert idml to indd

README.md

InDesign 7.5 to 7.0 downconverting

exec export_idml.jsx

it will export idmls into idml folder

exec idml_to_indd_with_name.jsx

export_idml.jsx

#target "InDesign-7.5"
// indd7.5 => idml
(function () {
  var export_to_idml = function (doc) {
    try {
      var idml_path = doc.fullName.parent + "/idml/" + doc.name.replace(/\.indd/,".idml");
      doc.exportFile(ExportFormat.INDESIGN_MARKUP, new File(idml_path));
    }
    catch(x_x){
      // ignore indd7 or early?
      $.writeln(x_x);
    }
  }

  var ind_folder = Folder.selectDialog('indd?');
  if (ind_folder !== null) {
    var indds = ind_folder.getFiles(/\.indd/);
    if (indds.length > 0 && !File(ind_folder + "/idml").exists) {
      Folder(ind_folder + "/idml").create();
    }
  
    for (var i=0, len=indds.length; i < len ; i++) {
      app.scriptPreferences.userInteractionLevel = UserInteractionLevels.NEVER_INTERACT;
      var doc = app.open(indds[i], false);
      export_to_idml(doc);
      doc.close(SaveOptions.NO);
    };
  }
  alert("to idml.");
})();

idml_to_indd_with_name.jsx

#target "InDesign-7.0"
// idml to indd with document name
(function () {
  var idml_folder = Folder.selectDialog('idml!!');

  if (idml_folder !== null) {
    var idmls = idml_folder.getFiles(/\.idml/);
    
    for (var i=0, len=idmls.length; i < len ; i++) {
      var idml = idmls[i];
      var indd_path = idml.toString().replace(/\.idml$/, ".indd");
      app.scriptPreferences.userInteractionLevel = UserInteractionLevels.NEVER_INTERACT;
      var doc = app.open(File(idml), false);
      doc.save(new File(indd_path));
      doc.close(SaveOptions.YES);
    };
  }
  alert('to indd');      
})();