I have done many Hard drive swaps between my 3 PS3s & like 8 PS3 full backups/Data transfers ! I hope this will help . I have done a full PS3 backup to external & swapped my 160GB PS3 hard drive with new 1TB internal. Then restored all data to same PS3 with a new 1TB drive in it. Also restored to another Ps3 .It restores everything including the backups games on internal if you have any + DUPLEX PSN games .I did not notice anything missing every time i did this ,even though it says stuff about copyright. I think it still all gets restored including my movies & music, etc
Everything was a complete clone

Hope this helps with the wondering part ,lol