Posted invoice 'memo' field

[Nik]

Hi Folks,

I have been using GnuCash for about 6 months now to manage the invoicing 
for my small consulting company, and am relly pleased with the 
improvement of my invoice and payment handling - thank you to everyone 
involved! :o)

I've encountered an issue that I find really annoying, and I was 
wondering if I am just "doing it wrong", or whether there is a feature 
enhancement opportunity in there. :o)

The annoyance I find is that I have to enter invoice-specific 
information twice to have it visible where I would find it most useful: 
in the Accounts/Receivable account.

So my current workflow is:

1. create a new invoice, complete with notes on customer, job details, 
and PO number.
2. enter the various entries for the invoice
3. post the invoice - due to the length of time most of my jobs take, 
this is often some time (a week or more) after I created the invoice.
-- Now, I have to remember to /copy/ the useful information from the 
invoice notes into the posting memo field - otherwise that information 
doesn't show up in the A/R, and all I get in A/R is a list of invoices 
to the same customer, that are only distinguishable by their amounts 
(which tend to be quite similar).

I would find it /really/ useful if some or all of the invoice notes were 
copied automatically into the posting memo field.

So, my questions:

Q1: Is there a way to enter information into the invoice such as PO 
number that will be visible in the A/R listing once the invoice has been 
posted?

Q2: Assuming not, then what would people see as the best enhancement to 
address this?
- i) copy the first /n/ lines from invoice notes into posting memo when 
posting, and allow the user to edit the memo field;
- ii) make the invoice notes visible in the A/R view as well as, or 
instead of, the posting memo field;
- iii) other?

I am quite happy to code either i) or ii) and submit the changes as a patch.

Cheers!
Nik