Playlist re-adds deleted songs when I add new songs (Solved)

[saotome_miya]

I have used AIMP on Android for quite some time without any problems and really enjoyed it. But then all of a sudden it started to behave strangely...
I had put together a playlist manually. I update that playlist on a regular basis. I delete some songs and then add others. Which worked flawlessly. But then it started to happen that when I deleted some songs and then added new songs these deleted songs where re-added. Same happens when I use "update content". And it's not just recently deleted songs. Can be songs that i deleted quite some time ago. They just don't want to go away.
I cleared the cache. I started with a completely new playlist. Nothing I've tried solved the problem.
What can I do to get rid of this VERY annoying - and actually unbearable - behavior?
Thanks!

[Artem]

What app version you using?

[saotome_miya]

4.10.1422

[Artem]

Update the app, please

[saotome_miya]

Well, this was the current version on the Play store.
But when you asked for the version I looked around and saw that other sources have a newer version. Which I installed in the meantime.
It didn't solve the problem directly. The playlist still re-adds the songs. But I deleted them again and then exported the playlist and imported it again. And this imported version seems to work properly.
Thanks for the support!

Out of curiosity: Why is there an old version on the Play store?

[Artem]

Why is there an old version on the Play store?

The update is being rolled out in several stages.

[saotome_miya]

I see.
Thanks again for the support!
I marked the topic "solved".