Sales Backorder Details Report - Add warehouse locations

Hi, The report currently adds ALL the stock from the various warehouses to calculate the qty required to fulfil the backorder. Is it possible to show ALL the warehouses and the qty currently available in each warehouse? As certain orders will only be dispatched from a certain warehouse we would like to calculate the backorder qty using stock from only that particular warehouse ( as we wouldn't be moving stock from other warehouses to fulfil the order ). Thanks Parul