Smart Playlist that includes all song that are/were in another playlist I have one active playlist which contains about 50 songs. But I remove and add songs very commonly at this playlist. I want to have another playlist that includes all song that currently are and have been in the active playlist. Can someone help me to create that smart playlist?

Here is a screenshot of my first attempt but this creates a live updating clone, which is not very helpful.
iTunes' Smart Playlist feature does not have any memory. You can only refer to songs where/how they are in this very moment.

You can, however, add songs to the new smart playlist that have been played in the last X hours/days.

If you can 'explain' to iTunes how to find the songs that you want to have included/excluded, you can create a smart playlist for it.

Does this answer your question?