Sales invoice is not generating stock move journals (purchase/ incoming goods does create stock moves)

I am using real time (automated) inventory valuation.

The method I use for sales is  accounts > customer invoices > create (enter goods) > validate.

The default UK chart of accounts is installed & the following account movements work as expected:

F000 Turnover/ sales category 400000

G000  Cost of sales / cost of sales 500000

B010 Stocks & WIP/ 100100 Stock (but only for incoming stock)

I realise that this behaviour is caused by the lack of stock move journals on sales invoices so the question is: how can I configure the software to automatically create these stock moves?

mine is a very simple operation; goods come in to stock, held in stock until sold.

No requirement to allocate stock, no deliveries of sales,