upgrade from vbRanking

I am currently using vbRanking and have already got some good PR for some of the urls.
My questions is, after I upgrade to vbSEO, will those urls still be available and be automatically redirect to vbSeo's canonical urls?
Theoretically if I combine the rewrite rules of both product might work. But I want to get the confirm from the experts

Thanks.

P.S. If I had seen the discounted price earlier

What you want to do is 301 the vBranking urls to the new format from vbseo (which ever you choose)

Of course, assuming vbranking is a decent product (i have no idea what it even is) you can always use the vbseo custom settings to match those of your current solution

ie, if you have
site.com/topic-title-99999/
you can use the custom rules in vbseo to match