Unfortunately, they also disappeared in the Project Map. Initially I draqgged the details from the Project Map to the View Map. I initiated the detail process again last night by utilizing the detail tool and identifying a detail from a wall section. It appeared in the project map. Instead of dragging it to the view map, I pressed the "Save View" button to save the detail to the view map. This morning the detail seems to exist in both the Project Map and the View Map. I haven't yet imported it to the Layout yet. I had done that previously with the two details that I "lost." I'll try placing the detail on the Layout and closing the project to see if that is a problem.