Problem/Motivation

mp_seller_order_statuses will contain incorrect information under certain circumstances. If you create an order, complete it, and then go back and update the order by removing some products from the order, such that there are no more products from a particular seller on that order, mp_seller_order_statuses will still reflect that a seller has an product for sale on that order. The problem will then arise that in /reports/seller/custom, the seller reports, # of orders (for example) will be incorrect, since that data is sourced from mp_seller_order_statuses

Proposed resolution

Unsure, I think that all order status updates should trigger a function that checks the accuracy of the data in mp_seller_order_statuses

The issue here seems to be only somewhat cosmetic (which is still significant), but I wouldn't be surprised if it has other impacts as well.