Indian Sindhis having family in Pakistan?

Do Indian Sindhis still have relatives in Pakistan? If so, what are the differences you have noticed between them and yourself other than the obvious mistreatment.

And do Indian Sindhis still feel any affinity towards Sindh given that Pakistani establishment has done nothing to propagate local cultures and even though Sindhis make a huge chunk of the Pakistani population, you rarely see any famous Sindhis on TV.

Also, how quickly are indian Sindhis losing their mother tongue?