Edits made in Playlist not showing in Timeline

I’m trying to make a photo & video slideshow. I’ve made edits to my clips in the playlist panel. Then I’ve added them all to the timeline.
In the timeline the edits (rotating photos to correct orientation etc.) are not showing. What am I doing wrong?
When I click on the project tab, it highlights the timeline clip and shows the photo sideways. When I click on the source tab, it highlights the playlist clip and shows the photo in the corrected orientation.