Standalone episodes that are really part of a series.

Hi, I'm fixing the records for tv shows that our public television station produced. We have a series called Tennessee Civil War 150 that has 10 episodes. Some of these episodes have been created by the community as stand alone episodes. Is there a way to move them into the series?

Series - Tennessee Civil War 150 - https://www.imdb.com/title/tt15507366/

Here is the order the existing records should fall under the season.

Ep #1 - Secession - https://www.imdb.com/title/tt2353115/

Ep #3 - No Going Back: Women and the War - https://www.imdb.com/title/tt2254077/

Ep #5 - Crisis of Faith: Tennessee Civil War 150 - https://www.imdb.com/title/tt2214778/

Ep #6 - Looking Over Jordan - https://www.imdb.com/title/tt2876844/

Ep #8 - Wessyngton Plantation: A Family's Road to Freedom - https://www.imdb.com/title/tt3883210/

Ep #10 - Reconstruction: A Moment in the Sun - https://www.imdb.com/title/tt4634864/

And here is the production website we built that shows the order: https://www.wnpt.org/tennessee-civil-war-150/