I have made a simple text part by using “Open other”. This I drag into the Playlist and from there into the Timeline. So far so good!
And that part is now still in the Timeline, but no more in the Playlist! It’s gone, away…
But I still can see that part in the Timeline and it works like a charme.
I do not get a warning (or so) while opening the project!
This happend also some days ago! (I do not know yet what exactly it was.)
I wanted to drag it from Playlist into the Timeline, where already one existed (and still exist), but it wasn’t present anymore in the Playlist!
In that case I had drag it again into the Playlist…
In the case of the Text part, I can copy and paste it, like normal…