Bentonite

[Jumpshot]

Hi, another question for the veterans out there. I am making another batch of Merlot from Alexander's Sun Country concentrate. I was told by a brew store employee to not add bentonite to the must until after the first racking. My instructions say to add in the beginning. He told me by adding it in the first stage that it would rob color and flavor from the wine. Any thoughts?
Thank you, Jumpshot