I have 15 vob’s (from music video dvd files) numbered VTS_01_1 through VTS_01_15. When I create new ifos with IFOEDIT, sometimes it reorders the VTS files – the 4th file might be placed as the 10th file, etc. Once this occurs for a desired ordered set of VTS files, no matter what I do, IFOEDIT seems to have a mind of its own and will not place the files in the correct order. Sometimes as well, it will miss a track in the middle of the batch and produce 1 less chapter than it should. Other times, for a different set of vobs it will work perfectly and in order.