Comments on order dissapear when shipping adress is changed

[PieterM]

A customer mailed me that the comments for an order dissapears when the shipping address (checkout_shipping.php) is changed. I tried it, and could confirm this. It also happens on the when the customer puts in comments on the payment (checkout_payment.php) before changing the payment address. Luckily this does not happen when either shipping address or invoice address is changed before the comments are typed.

 

How can I solve the problem?

 

Kind regards,

Pieter Muller