Better method of keeping track of progress on deleted content

[Lobuttomize]

If a group deletes a bunch of chapters for a manga, or if it's one that is linked to MangaPlus who only keeps 3 chapters free at a time, your progress is essentially lost when those chapters are deleted. I think the most ideal way to track the progress would be having the "Reading progress" number update to the highest chapter number uploaded that you have "seen."

 

[Holo]

There's a difference between the deletion of a chapter because of a mistake, and the deletion of a chapter because the group no longer want the chapters to be read on MD. In the latter case, the chapters are usually marked "unavailable" so that you can still track your reading progress and read comments. Also it allows for the chapters to be restored at a later date if the group decides to return or if they go inactive.

You can enable the display of unavailable chapters in your user settings.