We're requiring referral on creation of customers. Considering this wasn't always the case we have some customers with no referral type. Due to the limited scope of the referral report this is creating false statistics as we can no longer edit existing customers without the newly required referral type.

In the meantime I've made a selection called "legacy" but this is just a workaround. At the end of the day, the implementation is poor and I hope bringing it to your attention allows you to address it.

All the best!