Google Apps Script doesn’t offer a method for moving files from one folder in Google Drive to another one but there’s an option to add a file in Drive to multiple folders (similar to symbolic links in Unix). That can be used for moving files as well – remove the file from all existing folders and add it to the target folder.
// Move file to another Google Drive Folder function moveFileToAnotherFolder(fileID, targetFolderID) { var file = DriveApp.getFileById(fileID); // Remove the file from all parent folders var parents = file.getParents(); while (parents.hasNext()) { var parent = parents.next(); parent.removeFile(file); } DriveApp.getFolderById(targetFolderID).addFile(file); }