Will PSA down grade because of a hologram?

Has anyone ever had PSA/DNA (red Flip) down grade an autographed card because of an athlete’s personal hologram on the back of a signed card? I have heard that they won’t down grade the card. I just want to be sure before I have an athlete apply their sticker on the back at a signing. I know that you can request not to have the hologram at most shows. It would be nice to have it for authentication purposes if it won’t count against the grade of the card.
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Mike