Is it possible to change proprietary business into partnership, if someone have already migrated to GST with PAN of Individual?
The same is not possible now, as only migration process is going on. From 1st July 2017, GST will apply, there might come the procedures to solve the above issue then.
Not possible even in migration and after migration.
Not possible at this stage. After implementation of GST,since PAN will be new, so new registration will have to be taken.