Ok, you're slightly confused. Dinopolis TIMELINE wasn't pulled into the Keystone timeline. Just Dinopolis CITY. The reason the timeline shifted from T-1 to T-2 is because of the Time Crash.
lol
I'm sorry, but the one who's utterly confused is you.
You see, when you move a determined piece of space-time it's the time and space which are moved, not only space. So when Dinopolis was pulled into Keystone T-1, it was the space-time that formed its timeline which was pulled, not only its spacial content.
If only space was moved through time/dimension travels the past of the travelling subject would become nonexistent, and there would prolly be many other paradoxal effects, or put it simply, if the game stated that only space could travel through time/dimensions, it would be stupidity. Imho, that is. And I really believe that if there's one adjective that couldn't define the staff team from both Chronos is stupidity. Slight mistakies, yes. ABSOLUTELY inteligent plot, yes. Hopefully, they know what they're doin'.
AuraTwilight, use ur brainnnnnnn man, c'mon, dun be lazy ><
Case closed?