In scheme when there is Buy 1 & Get 1 Free, it shows the item sold at Rs. 0 in the bill as well as the analytics.
It should rather be shown as Discount as it was there before.
Because of this issue, there is an issue in analytics. When we see a particular category's average selling price, we notice that most of the items in a cheaper priced category are sold for free.
Since we did not receive any response from your end against the posted comments, We are unable to consider this idea to proceed further so marking this as "Will not Implement". In case you need any further help regarding this, request you to log a new idea with proper details as required by the Product Team.