Turns out that they were added to my library not as "Boston" but as "In The Style Of Boston", great first question answered by myself

So my main point here is that BOTH copies are being added to my library. I just want one. I deleted the ".m4v" one and kept the "CDG" version. Am I doing this correctly? I just don't want 2 of everything I buy in my library.
Thanks!!!
- Scott