Inventory

Hi, 

I am currently trialing QBO Plus for my construction business. I am hitting a road block trying to utilize inventory for the way our company purchases materials. The background to my issue:

• I want to make use of inventory to track surplus materials generated from a project. 
• We purchase materials throughout a project specifically for that project as opposed to purchasing materials as stock / inventory and drawing down from it (this would be too time consuming for us to track). 
• At the end of every project there are always materials left over due to minimum order quantities. 
• I want to be able add these materials to inventory so they show on our accounts as stock assets until we have a use for them on another project. At which point we will drawdown from the inventory as normal. 
• I want the transfer of materials from a project to inventory to reduce project COGS.
• The issue is every way I have tried (refund, credit note, zero sales receipts etc.) seems to result in various incorrect results i.e. incorrect inventory quantities, or project COGS remain unaffected , or a reduction in project income (as opposed to COGS). 

This is a key feature that will sway our decision on whether or not to proceed with QBO. I would therefore be hugely grateful if anybody is able to help me on this. 

I must add, I am not a bookkeeper / accountant and only have a relatively entry level knowledge of this topic. We leave this to an accountant, however since we are only testing software at this stage we are not in a position to run this past our accountant just yet. 

Thanks in advance for your help.