Another, perhaps easier way to carry across the sub colour and language info to the new IFOs is to make sure you rip the ifo for the film as well as the VOBs but instead of creating new ifo's open the film ifo into ifoedit and use VOB Extras.
Just make sure that you have at least 'Correct Vob-Unit (Navigation Pack) pointers in VOB-files' + 'Correct original IFO files' + 'Create new IFO files. (Movie Only)' ticked. ifoedit will then create your new ifos but they will already have the correct sub colour and audio language information
Oh, almost forgot, you may get an error message (something about an ifo file not existing or something, I can't quite remember) from ifoedit during this process but just OK it. If you stripped streams you'll have a new set of VOBs - if not just some new ifos. Just make sure you have all the right ones in the right folder, you've quitted and then restarted ifo edit and done a 'Get VTS sectors' before you burn.
P.S. erm,.,. DVD2one . . . ..
(thought I'd better mention it 'cos after all, this is their forum + I like the way development is progressing guys. Keep it up!!)