Auto-Markup Pricing Passed through API

We have previously used a feature on your system called Auto-Mark-Up. In the Pricing section, you click on “Calculated” to activate automatic mark up. The settings are then set in the row, as follows: Type (Markup%), Use (Supplier - FixedPrice - also known as COST), and the value, which is the percentage to apply (Markup% Type), i.e. 68% Markup based on the FixedPrice (Supplier Cost Price). 

It would be useful to enable this feature to be passed through the API endpoint. At present, when this feature is turned on, and API is used, it returns nonsense / made up prices. It's not possible for us to use the automatic markup and API at the same time. It would be very useful to have the ability to use auto-markup with API.