@Anonymous
Please learn from this input.
"If you already created an invoice for this item, you'll also need to edit that to ensure you have an accurate inventory and financial reports in QuickBooks."
You cannot sell something you don't have in stock, when managing inventory, because selling to negative on hand creates havoc with your accounting data, COGS and Asset valuations. That date of sale, what you sold has been affected if you listed Inventory. If you sell an Assembly item and then Build it later, you need to Date the build on or before the sale.
If you make an assembly item and historically want to show it existed, was Built and Sold, remember you are affecting Everything. If, at this time, you already know inventory is physically on track and counted and financially matched, then you should be very careful. What you are about to do might affect all financial tracking, since the Build moves the asset costs to the new item and the sale might result in Recalculated values for purposes of the P&L.
Or, you realize this was Adjusted, because the sale was not listing the parts or because a different type of item is used for the sale: "so the parts that make up the item weren't properly tracked."
Example: If I remodel your bathroom for a Fixed contract fee, and I quoted this to include flooring and cabinets I keep in stock, you only have Contract Fee on the Sale. I used Adjust Inventory to job track what I removed from stock on your behalf. Or, I don't bother with tracking, and quarterly the warehouse takes inventory, so this is all adjusted as of Year End 2018. You don't want to affect everything historic, by changing that concept historically.
You might just want to move forward with the better concept now that you understand the tools that would be helpful to your accuracy.
