Disposal of part of the holding while retaining the subsidiary

When a parent disposes part of its interest in a subsidiary while retaining the subsidiary, the increase in NCI is calculated as % of sub disposed x (Sub’s total net assets + goodwill).

My question arises when the proportionate method is used for goodwill. Does it mean the goodwill should be grossed up before being fed in the formula above since the goodwill will only represent the parent’s portion?

Thank you