Apple Music songs missing after visiting a link from a different region

Hi Apple Support,

I am using an Apple Music account in the United States region. Recently, I opened a playlist link shared by a friend from mainland China (Apple Music CN region). After that, I noticed that some of my previously saved songs are now missing from my library or marked as unavailable.

These songs were accessible and playable before. I believe this might be due to region-specific versions or copyright mismatch caused by switching regions via shared links.

Please advise how I can restore those songs or prevent this from happening again. It would be great if Apple Music could keep original song entries intact regardless of the regions of shared content.

Thanks!

[Re-Titled by Moderator]

Original Title: Some of my saved songs disappeared after visiting a link from a different region