Newly Created Media Sources Never Attend Press Conferences

Hello, I have spent months working on creating a database using the official pre-game editor that includes real media sources and journalists, so that we could have realistic press conferences with actual media and journalists for each team.

The problem is that several media I added from scratch, creating them as new entities, do not participate in the press conferences, even though everything is set up correctly (I always select "attends press conference").

I also tried with the official database, and if I add a new media source and set it to 'attend conference,' that media still does not participate.

I found that the only way to make it work is to duplicate an existing media and modify that, but this would mean discarding my file which has almost 18,000 modifications, thousands of newspapers, TV channels, and real websites created from scratch, not by copying.

I believe this is a bug in FM24 because in FM18 and FM19, where I did the same work, all media I added from scratch attended the press conferences.

Is there a solution to avoid wasting all the work done? This is important work I have done to provide the community with a file that finally has 100% real media and journalists.