The Hindu population in Sindh is 80% Dalits and 20% high caste. The high caste Hindus are rich businessmen and professionals. Sindh is Pakistan's Bihar where kidnapping is common and rich Hindus are a easy target.Again, it is speaking to the fertility rate. You have articles saying you losing thousands of Hindu families leaving Pakistan for India every year. I'm just saying, that has to statistically mean you are losing that population. Do you have Muslims from India coming the other way?
Hindus Kidnapping in Sindh | Sindhi hindus Weblog
While some landless Dalits are target of landords and their goons who kidnap Hindu girls and forceby convert them. This not limited to Hindus and the Muslims are also target of kidnappings and force marriages. Only the Hindu kidnappings and forced marraiges makes the news. There is no organized anti-Hindu riots in Pakistan as they are common in India.