I dont know where all my youtube videos went? Help!

I had 70 videos for my offline business and I just looked at the channel and they are all gone! The channel is still there. I used the same videos from my old site but I added a new intro to the beginning and the description was the same for each video except I changed the name of the business. Would youtube have removed them for some reason? How could I find out?

I just looked and they are still there in the backend but when I look at channel they are not there!

Problem solved. They were all set to private for some reason.