If I delete a portfolio item, does that delete it from any VisualCVs I used it in?
Yes! Deleting an item from a portfolio will also zap it from any VisualCVs that use it, so delete with caution! On the other hand, if that letter of recommendation you uploaded when you were a lion trainer is no longer remotely useful in your present career and none of your current VisualCVs use it, it’s probably safe to bid it adiós.