Will delegators be dropped when switch to main net?

It is my understanding that we can have people right now start delegating their their REAL ada to our testnet pool (but they just won’t earn rewards in this phase) - correct me if that first assumption is wrong.

Anyway, my question is, if we have people delegating to us now… when we make the move to the mainnet, will all those delegators still be with us, or does the process of switching over cause them al to ‘decouple’ from the pool, necessitating them to have to re-delegate?