One other thing I wanted to document here since it took me some time to figure it out. Since I didn't want to break my links in search engines to each of my products which were in OSCommerce, I put in redirects from my old oscommerce product pages to my new ubercart product pages into my .htaccess file. But it wasn't as straight forward as I though because the oscommerce product pages are written in the following way:

Using a simple redirect like this:

does not work because of the question mark/query in the original url. So the way I needed to do it to get it work was like this below:

Hope that helps for folks migrating from Oscommerce to Ubercart.