SEP max contribution - two schedule Cs
I have two schedule Cs (two different businesses) and when I select the "max" contibution button, it based the net profit from both businesses combined. I understand this is how it is supposed to be done.
However, further through the process of adding this contribution, TurboTax shows only one business under "Amount of contribution associated to this business". If the max contribution is based on all schedule Cs, why is TT only showing one business as an option to associate the contribution? How is this to be handled if it needs to be split, or how do I make the second business show up under the association screen? Or does it matter at all that it's associated under one business, but the amount if determined by the net profit of both?
I'm using turbo tax for desktop on a mac.