Specific seeds do not save

I have used specific seeds and settings for three worlds on my PS3. One was a TNT superflat, the second was an ocean with one layer of water, and the third was a world with the seed "J.R.R Tolkien" which I used to create something that I have always wanted to make. The problem is that all three of these world's were replaced with a regular world, and it was the exact same world for all three. This is very annoying and frustrating, and I have tried everything that I could think of but nothing has worked. Please help.