These responses seem to be all over the place, so I'll throw mine out there:
We got cold-called about 2 weeks ago by a PCC after re-pricing a cruise with a CSS. I guess she saw caught our history and future cruises, and that we didn't have a PCC. She's 6-years with NCL; very helpful, knowledgeable, and informative.
Since she called, I asked if she could apply a FCC we just received for the Spirit cancellations. She had no problem with it, took care of it, no problem.
I asked whether she's getting credit for helping me with future cruises booked through the website, and she said I was now hers forever (or as long as she's with NCL, I suppose) and anything I do, whether on the website or through her, will be hers.
Take that as you will.