[Typo3-shop] always in stock questions

[Johnny Peck]

I just upgraded tt_products to 2.2.9 and I am a bit confused regarding 
the always in stock situation with this version as it is different from 
the previous way I was doing it. I set all of the In Stock(pcs) fields 
to -1 previously and this would allow for that product to not get 
reduced in stock and would always be visible. With the new version this 
is very different because those with a stock of 1 or more are shown but 
not those with -1 as before. I get the idea that if stock is set to 1 
then it is not reduced buy this is not good for shops that have only 1 
of a particular item such as a specialty tobacco products retailer. How 
can I adjust this so that -1 shows those products that are always in 
stock, 0 is not in-stock/visible, and any positive number in stock is 
reduced by one per item sold until 0 or stock is replaced by the admin?

Thank you and Cheers,

Johnny Peck