Modifying the available in stock filter in Layered Navigation Block module

[Hossalem]

Hello everyone,

We are using the Layered Navigation Block module on our PS 1.6 but have a problem when using Product Stock filter.

Problem is that we keep some products on stock but mainly work on market place basis whereby we ship products direct from our suppliers warehouse.

So basically a product is available for order even if not physically in our own warehouse. But the module takes only product in our stock as available and hence when the filter is on, most of the products are hidden from the screen.

How can we set the module to show all products that are available for order as available stock?

Thank you,

Hossein