MDG 7.0 Replicate by Model vs Replicate by Object

Hi everyone,

There are two different functions (Replicate by Model vs. Replicate by Object) available on MDG-F 7.0 and I would like to know the difference of these two functions. I would also like to hear things like do "Replicate by Model in Situation X" and Do "replication by Object" in Situation Y. Please share your idea of X and Y as far as you know.

Thanks,

Luo