The way I see it, Dark Shadows' timeline is a living thing, constantly changing. Practically everyone altered it or was affected by someone else's alterations at some point, and occasionally the future changed, and occasionally it didn't. [spoiler]Barnabas didn't remember Vicki taking Phyllis Wick's place in the past, and yet they managed to sort out all the messes Gerard caused in 1970 by their fiddling with 1840 (fiddling so extensive that it would probably have caused Quentin to never have been born, or at least been a totally different person, due to the deaths of Gabriel and Edith, as they didn't have any grandchildren when they died, and Edward mentioned "Grandfather always favoring Quentin," which makes no sense to start with, as Gabriel hated the first Quentin and likely would have hated his namesake... headasplody!. Also, since the Leviathans prevented Barnabas from making it back to his coffin at the end of 1897, Willie never would have been able to find him in 1967, rendering the entire series from the introduction of Barnabas to the end null and void.[/spoiler]