I have a problem keeping the right URLs when migrating

I have just made my first attempt to migrate a standalone site into one of my multisites using Snapshot Pro. It looks like the the data and posts are there but the media files are now generating an incorrect path in their URL. For example the correct path is http://rsen.i1p.us/wp-content/uploads/sites/3/2015/09/the-adventures-of-dave-and-randy.jpg but the new site thinks it should be http://rsen.i1p.us/wp-content/uploads/sites/3/sites/3/2015/09/the-adventures-of-dave-and-randy.jpg. During the migration process an extra "sites/3/" showed up in the URL. Can you advise where I will need to edit this to get the correct URLs?