Linked topics (splitting and managing megatopics)

One of my forum users recently requested this feature and suggested implementing it in two steps:

  1. First step: When a topic reaches the maximum post limit and a new continuation topic is automatically created, users who are Tracking or Watching the original topic would automatically have their notification level reset to Normal.

  2. Second step: Automatically transfer each user’s previous notification level (Tracking or Watching) from the original topic to the new continuation topic.

This is a proposal from my user, who believes that even implementing just the first step would be a useful improvement. The second step could be considered later as an enhancement.