I am not sure if this is related to the packing slip issue, but I have sold an item with Shipping TBA in the listing. There is now no option to go into the listing and book from there so that an email is sent to rthe buyer with tracking details. There is a Book a Courier button on the sold email from Trade Me which goes to rhe listing where there is no option  for Book a Courier. I have had to do it through Something Else I Want to Send, which means that my buyer doesn't get the details and I have to send them manually. Is this just me? I wonder if I am missing something. 

Thank you. Makes it so much easier.  Live and learn every day!