Disney's share in SIPL is through Disney India. After aquisition of Fox assets, 'Disney India' become irrelevant as they integrated their activities into Star as SIPL has wide capabilities. So Disney India remained as a shadow parent company to its subsidiary Disney Star.
Now situation arise for Disney India to stay standalone and oversee JioStar as a stakeholder. More than that they have to move with some independent buisness - Mainly Merchandise & Hollywood movie distribution. I think as per JV agreement international contents of Disney in India is locked to JioStar for a tenure but subjective to Disney India. Also desecration of NGC, Disney Kids channels etc is with Disney India though it operates under JioStar. Means any transaction of Disney International contents, NGC Channels, Disney branded kids channels etc move to Jio Star only through the tables of Disney India. Don't know Star Studios is a part of JV. Anyway Disney may currently depend on JV to produce and distribute movies.