... . But you need only transfer a file once, after which you can save it in BOX3 format for future working. MECBOX files are exported from one version of Templot and imported into another. After the transfer has taken place, the MECBOX file could be deleted, although it would be worth keeping as a backup. There is a new transfer menu in the storage box, with menu items to export a MECBOX file of your current box contents (track plan), or to import a MECBOX file if you wish: 2_301753_450000001.png There is also an option to export a matching MECBOX file every time you save a normal BOX file: 2_301753_440000000.png The above option is on by default and you probably want to leave it on, so that any work you do in Templot2 will be automatically backed up for possible future use in Templot3 or TemplotMEC. But it does make saving noticeably slower, so for large track plans you may want to turn it off and export a MECBOX file manually occasionally. You can also export MECBOX files from the file viewer. This ...