When a salt-doll jumps into the sea, what happens to it? Same fate awaits when a soul merges in Brahman, it no more has identity other than Brahman.
On an international flight or passenger-ship, there are several hundred passengers bound for varied destinations and purposes, the cabin crew and the Captain in the cock-pit, in control.. Besides, there are hundreds of back-room staff performing related services at the air-ports and ‘en route’ enabling points assisting the chain of operations. Some passengers re-settle elsewhere or in other countries (with permanent visas) without hope of returning, some travel on business, some for pleasure only for a few days.
Much the same way, our Universe is in a complex chain of movements, carrying its load of passengers and their possessions. Those like the Captain and staff keep shuttling between destinations, doing the same every time. They are caught in the unending chain of birth-death-rebirth for long, endure it just to exist. The business-like and pleasure seeking go to appropriate places like heaven or hell, to enjoy or suffer the fruits of their actions and thoughts here and, thereafter, return. The few with a well-earned immigrant visa go for ever and merge in the Lord’s community i.e. Brahman, never to be re-born.