Using direction of integration and disintegration is a bad way to decide your type. Don't even look at it.
Back when I thought I was a 5, I noticed that I got really excitable and scattered on occasion, and I could also be really forceful and decisive at times. Does that mean I disintegrate to 7, and integrate to 8? No, both of those things are just part of being a 3.
Also, only the people who have their DOI/DOD in their trifix should really be able to relate to that, or so I'm told...
That said, it might be useful to know what the directions really mean. 3s integrate to 6 when the finally stop trying to pull one over on everyone. 7s integrate to 5s when they stop looking for the next great thing, and so on.