MovieDB has wrong episodes for Mrs Brown's boys, can't change primary source

This should be a simple fix but I can’t find it.
The Episode data and Meta data for the Specials from Mrs. Brown’s Boys are being sourced from the Movie Database.
There is an error in that episode data, so I wanted to use TheTVDB as the primary source and ignore the Movie Database, except it appears that it is greyed out and can not be unchecked as a source.
Any ideas on how to fix this?

Have you upgraded to the Plex TV Series scanner and agent? If so I believe the area you’re speaking of doesn’t apply to you anymore

Click the pencil on main show poster → Edit → Advanced → Episode ordering

WOW!
That was too easy to fix.
I can’t thank you enough, it worked the minute I made the changes.