With the J.W "religion" being as "light" as it has ever been I guess there are a good number of returnees, people who left a good while ago going back returning to restore normal family relationships.
I learned of two yesterday, the guy NEVER has been a believer in the J.W nonsense, brought up in it, never baptised, now in his mid thirties. His new wife I do not know, she may have been the reason he went back.
This kind of returnee will boost numbers a little, but will do little to strengthen the religion, more likely it will weaken it, as people like that young guy will be seen to get away with a lot, he did throughout his teens, nothing the Elders could do, he was unbaptised. They used to give him a good talking to now and again, but he nodded and agreed, and then carried on as usual !
The whole J.W "light" idea is to boost numbers and keep the $$$ flowing in.