Not after a certain phase. Since each subsequent task of the project depends on the absolute final completion of the prior task, logically any change to a latter step required we "work backwards" to revise the prior step in order to complete the next. For example, the Timeline of visual and effects is based on a flowing Narration, and if you alter the content or flow of that narration, then obviously the Timeline will need to be redone accordingly.
In essence this is called "double work" and inevitably costs the client added costs for the added time. Thus, as projects move forward thru these interdependent tasks, and where projects phases are completed quickly, then we want to avoid having to go back and revise things unless absolutely necessary.