ZealKnight, I'm not sure you understand TTI correctly. TTI is the idea that once you've time traveled somewhere, you'll always emerge from the Gate you used, regardless of the changes at the destination.
CGM, Sorin and the Xamoltan are the only ones that remember the Reptite timeline because they're the only ones that time traveled TO and OUT of it after seeing it. CGM were in Prehistory, they were sent to 1005 AD, they returned to Prehistory, and finally they prevented the resurrection of the Reptites. They'll always remember what they saw because they went there and went back.
On the other hand, Marle (for instance) was in Prehistory, she was sent to 1 AD, and
that's it. She died there. She didn't time travel OUT of it. When CGM prevented the Reptite timeline, the Marle that was in Prehistory still emerged of a Gate in 1 AD, but since the timeline was different she experienced different events. What's important is that she's the Marle that was in Prehistory. She's not the Marle that was in a prison in the Reptite timeline. It's not like the prison suddently disappeared around her and the frail Cedric suddenly had a shiny gold armor materialize on his rags.
And C99 you said that the reason for mechanical tech in Dinopolis would be explain, is it still coming?
It was all explained. In Prehistory, the Dragon Tooth, which was made of bones of fallen Reptites, was sent by King Zeal's Frozen Flame to 3 million BC, where the Frozen Flame of that era used it to resurrect the Reptites.* So in a way these new Reptites were created by the Frozen Flame, just like the modern humans were "created" by it (though in their case it's more like "evolved"). These Reptites always thought humans were a corrupted species disconnected with nature, but by 2305 AD they discovered that they suffered the very same corruption, which is why they tried to build the Vision Serpent that would reconnect them with nature.
Uhm, I just realised this didn't Chronopolis say that Zeal didn't exist or it may not have existed, yet Belthazar used people from Zeal in this place?
Mmh, I'm not sure what you're referring to?
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(*I was inspired by this by the way:
http://en.wikipedia.org/wiki/Dragon%27s_teeth_(mythology). Zeality came up with the name Carmine Genesis, a pretty awesome name as always.)