I realize this is an old topic. If you want to use an old project done in Vijeo Designer 4.3 in Vijeo Designer 6.1 (Or 6.2) you can do the following: 1) Export project from Vijeo Designer 4.3 2) Import project into Vijeo Designer 4.6 (Or similar that allows you to) 3) Export from Vijeo Designer 4.6 4) Import into newest version 6.1 / 6.2