I think positive CCP used to be removed when the comments in question were deleted by the user. This no longer appears to be the case. Only negative CCP should be retained if the comments in question are deleted, but for some reason positive CCP is kept too at the moment.
I noticed some suspicious activity, posted about it here https://voat.co/v/ProtectVoat/2648864
@MadWorld tested that the positive CCP is retained even if the comments are deleted.
@SearchVoat even caught the CCP farming spammer who made me notice this issue. Looks to be a pajeet spammer trying to tarnish the name of someone who hunts these pajeet spammers.
This issue allows spammers to upvote new spam account's comments with aged accounts, submit their spam and then hide their tracks by deleting the comments in question. New spam accounts might be just burners, use once and forget them, but looking at the spam account's name which was caught makes me think. The account has the 10 CCP needed to submit links, if the account doesn't make any more comments that could be downvoted, they can keep spamming without any issues even if the submissions themselves are all downvoted for being spam.