My recording gone but still exists in sample editor

Hi…
Ive opened up an old project I wanted to finish…
The project contains over 50 tracks… No problem opening the project except it couldnt find 4 audio tarcks.
I found this strange since the tracks was located in the orginal audio folder as with the rest of the tracks…
Anyway I located the manually and the project loaded fine… But then I noticed that the tracks Cubase asked for was grafically flat… And I would get no sound from them… Then I double clicked the track and to get to the sample editor… And there it was… So what is going on… And most important: How do I get my audioclip from the sample editor back out on the timeline?

Regards!

Just something to try, when you select the audio part on the project page, is the volume in the info line turned way down?