Why not all people go to the same line of time-travel?
Written 4th April
Hi everyone, i don’t know if someone posted this before, but I was re-watching season 5 and I don’t understand why do the people that were with John Lock just disappeared, if they were together when the first time-travel. (Excuse my english i haven’t practiced it since a long time ago) And by the way, what happened to Bernard and Rose…

Ben was seperate from the other group of 815 and freighties survivors when the island started skipping.
The main group gets split up when they are attacked by Richard’s people on the beach using flaming arrows. That is the last we see of Rose and Bernard. I must stress that this takes place in 1954, so that the bodies of the 815 people who die from flaming arrows, including Frogurt stay in 1954 to (I assume) rot on the beach. This is born out with Charlotte’s death. She stops ‘following’ Daniel and the others after she dies.
This means that if Rose and Bernard are found and executed by Richard’s people before the island skips again, their bodies will stay in 1954. That is why a lot of people are speculating that they could be Adam and Eve in the cave. Hypothesis one.
Locke meets up with Sawyer and Juliet in the jungle after they are attacked by Widmore and the other mock-U.S. soldiers in 1954 (Jughead). After that they stay together. Rose and Bernard may have flashed with the group and may now be living safe and sound with Richard and the Hostiles or in another as yet undisclosed location hypothesis two.
Personally, I am hoping they took the Zodiac and made it off-shore where captain Stubing picked them up on the beautiful Pacific Princess where they are sipping Pina Coladas with Isaac and arguing about what to do next.