Found solution to battery problem of NEW MBP (But need data migration help)

So I found a solution to the unimpressive battery time I've been recieving on my mid March MBP. I like many others was getting half the time I should be. It turns out after doing a fresh install WITHOUT migrating my data, I now get better battery performance. So something with migrating my preferences/files is causing the problem probably because I was migrating from a machine with different hardware ('08 unibody)so the preferences were conflicting or something... I'm no expert. So my question is, Apple told me to copy my data over without doing a data migration so I am wondering what is the best way to do this? How can I make sure all my data copies over? I'm scared I'll miss something by just dragging things over from Time Machine, and some programs don't seem to work when I do that. Does anyone have tips on the safest, easiest way to do this?

 

I'm affraid that's what's causing the problem. Something is being copied over in migration assistant that is causing the reduced battery life. Is there a difference between data migration and migration assistant?