Edit max autosaves field?

On some pages, I can edit the Max Autosaves field. On other pages I cannot. What’s the story there?

Anyone have an idea?

Why can’t I edit this?

If a page uses a master page, I can’t edit the Max Auto-Saves field when I create that page. The only way to edit it is by creating my own custom PageList page with the max auto-saves field, searching for the page I want to change, and editing it inline.

This is super-frustrating.

Skuid, please either allow me to edit the field in the page builder, or allow me to change the default for max auto-saves to something other than 25.