you already did that in East Punjab. Kashmir's Muslim population was more than 3 million. Muslims were wiped out by Hindu majority in eastern district of jammu province.And Muslim in Western Jammu (Today's Azad Kashmir) did the same with hindus in their majority districts.
It does matter.It was near impossible to completely wipe out an entire ethnic group.Driving out a minority from a few districts is one thing but driving out a whole ethnic group is whole other level.Also,Nehru was on good terms with Sheikh Abdullah.He knew he can count on Abdullah to keep Kashmirs in India that's why he even offered referendum in Kashmir.
Please get your facts right.3.6 million hindu n sikhs migrated from west punjab as against 5.4 million Muslims from east Punjab.
Size and population does not mean anything. The Maharaja had signed the instrument of accession to India and land should have been freed up for the Sikh and Hindu refugees of West Punjab. If 5 Million Sikhs and Hindus could be driven out of the lands they held for generations then why not 2 Million extra Muslims being sent to Pakistan. The Kashmir dispute would definitely have been solved before it even began.
No comparison between Kapurthala and Jammau and Kashmir. Kapurthala was a tiny stae whose muslims population was barely over 2 hundred thousand. Jamm and Kashmir was a larger stae. Here Muslims were dominat in most regions. Like valley had more than 90 % population and still does. Gilgit and Baltistan area was also entirely muslims very few non muslims. In Jammu divison , there were Hindu dominated district in eastern side.Here Muslim minority was expelled and hindu and sikhs from west punjab were settled. Jammu district's muslim population was reduced from 36 percent to just 2 % .