
Pot luck, it is just like increasing the size of the litter you ahd first time.
I generally don't agree with the practice in numerically small breeds especially.
If the first litter was really good chances are that people will be wnating to get something as good which may or may not ahppen, but will mean that there will be more of the smae genes going into the gene pool.
I did a repeat last year and the pups are different than first time but share the various traits of the first.