Problem with added audio

There is the option of replacing the audio in your pieces with that of a YouTube video and adapting this audio to the score using markers. Now I have the problem that this doesn't work properly for me. I can synchronise this "new" audio with my score, but when I play back my score after saving it, the audio is still asynchronous to my score, even though I had previously synchronised it. I don't know why this is, but I'm pretty sure there were no problems with this function before. Can anyone tell me what the problem is or give me a tip on what to do differently? In any case, I hope that the problem will be fixed very soon.

Kind regards,

David