Just did the import

I Just finished importing from VB to Xen. It took about 11 hrs. Glad to finally be using the Xen software. My question is about redirecting the urls. I once used vbseo then discontinued it. So I redirected from vbseo back to vb urls. So if I use the Xen redirect it will be vbseo to vb to Xen?

Would I be better off just letting google grab these new Xen URLs? Would I regain my google rankings in time?