Accounting for internal use of items

I went ahead and tried this, but of course since there is no discount being applied now, there is phantom income being generated (in this case, it showed up in petty cash since I set it as a cash sale on a direct invoice). If I do apply a discount, won't that show up as an expense in "discounts given" (thus counting the usage under both "discounts given" and "QA")? How can I avoid this, or balance out the income, in a way that avoids the write-off being accounted for twice?

Would that not have the effect of still creating phantom income, though? I want these to show as a loss—if there is, say, $20 in income created by the invoice, the $20 expense will have a net effect of $0, so my expense is effectively not recorded. If I record it twice to force the overall effect to be –$20, then my expenses will show as $40, which paints an inaccurate picture of where my finances are and could cause problems when I look at the numbers for budgeting.

Perhaps FrontAccounting would benefit from a "Inventory Write-Off" feature that would simply post the value of whatever inventory items are selected to any given expense account. It seems like this is a fairly common inventory situation—there is always going to be inventory loss due to damage, theft, employee error, product expiration, etc. no matter what kind of inventory you carry, so having a simple workflow for accounting for such writeoffs would probably be useful for the majority of users who use FrontAccounting's inventory features.