Anti Pakistan sentiments are on quite high side in India these days. Following the government policy of alienating Pakistan in every possible way, different private and political entities are announcing limited or permanent bans on Pakistanis nationals. Pakistani sports persons were informally banned from 2008, so the other major area is arts.
Indian Motion Pictures Producers Association (IMPPA) announced a formal ban on casting any Pakistani artists in any future project. However it relieved the projects which are already completed. Two major films Ae Dil Hai Mushkil starring Fawad Khan in a cameo and Raees starring Mahira Khan in the lead role are the two mostly discussed projects in this regard.
While Ae Dil Hai Mushkil is releasing on Diwali weekend on 28th October 2016, the producer cannot replace the Fawad Khan role with another artist due to limited time. However Raees, due to release on the Republic Day weekend of India on 26th January 2017 might replace Mahira Khan with some other artist.
Here is the recent update from an Indian website dnaindia on this matter
The stand-off between Pakistan and India has just claimed its first casualty in Bollywood. Pakistani actress Mahira Khan has been eased out of Shah Rukh Khan-starrer Raees, due for release on the Republic Day weekend, according to reliable sources.