have a provider remove positive feedback left?

[Simon]

Perhaps it would help if they understood why you wanted this?

Offhand, I can only think of a few scenarios where a punter would want positive feedback removed: it contained personal information (real name, for instance), or you have a special relationship with one provider and want to hide "infidelity" with another (which would be a bit weird), or you've seen a barebacker and want to hide that from escorts who won't see clients who've seen barebackers (obviously not relevant to cam sessions, it's hard to imagine a safer form of "safe sex").