Feel free to pass this along- I’m not sure I can answer your exact question but here are my thoughts- IU is never as good as getting increased as the VA can and will continue to investigate your ability to work each year. You will if granted, get paid at 100% while it lasts but your ratings would stay the same unless you got an increase/decrease. Another note- if these disabilities are shown to have occurred during your time in service, then the fact that they’ve now diagnosed, shouldn’t change that. I can get a back rating from a 10% to a 40/20/20 [ROM plus radiculopathy), increase knees to maybe 20 or 30% each etc. you could very well end up at 100% and not need IU as well as gain the benefits. I’m Jennifer with Veteran Consulting Service 619-737-2250 if you want to chat.