Turn off "link to MYOB" option, or make it be approved by the supplier customer, and/or allow supplier customer to disconnect customers
The fact that other MYOB users who are customers of ours can link their files to ours for receiving their invoices without us being notified, or even being able to run a report to find out who has, is just plain rude. In the old ideas exchange, one of the moderators said it was to make life easier for all MYOB customers. However, just because it makes it easy for one of your other customers doesn't make it right for you to pass our internal CONFIDENTIAL breakdowns to our mutual customers.
Even if you eventually allow us to turn off the invoice summary that is now included in MYOB cover emails when sending invoices from MYOB (also sending our CONFIDENTIAL information to our customers without us realising until recently), this still won't stop customers linking their files to ours and still seeing that information.
We are not trying to hide anything from our customers. They are given a lump sum quote which they accept. INTERNALLY (or so we thought) we allocate that to different income accounts in MYOB. We send them a lump sum invoice without showing our internal breakdown. The descriptions we have on some of those line items are abbreviated codes our staff understand but are goobledygook to the customers and just makes us look extremely unprofessional when they see it at their end.
Stop distributing our internal information to our customers. We often don't even know until we discover it by accident.