Why doesn't insights match the graph?

_x000D_ _x000D_ I have seen many instances where the Likes, Comments, and Shares reported from the Graph API endpoint for a particular post do not match the stats reported by Insights. I.e.: https://graph.facebook.com/PAGEID_POSTID reports: likes 1000, comments 450, shares 300 https://graph.facebook.com/PAGEID_POSTID/insights/post_stories_by_action_type reports: likes 725, comments 375, shares, 200 Or something like that. I do realize that sometimes, insights will show higher numbers because Insights tracks stories that are generated off of a shared copy of the original post (very cool), but these are cases where Insights reports numbers lower than what the Graph API endpoint shows. Is this because after 28 days, Facebook Insights stops updating for individual post stats? Any ideas? I've filed a bug here: https://developers.facebook.com/bugs/400094966692945