Now, there's the Akorem Laan conundrum in Season 4 of DS9, but I still think the way the producers intend the timeline to work that even a change in Bajoran literature history over 200 years in the past isn't enough to place the station and crew and franchise in a new timeline. That those tiny little changes don't generate a whole new continuity, that the timeline adjusts to absorb the new little peripheral alterations and any big ones (outside the Kelvin Timeline) are rapidly corrected and erased, restoring the "original" continuity.