Is there a setting/preference that would prevent stand alone Invoices from impacting inventory?

anything for bills too? that would prevent in showing in inventory detail report

I'm curious why do you want them to behave like that? When you sell an inventory, does it not reduce your inventory?

all you have to do is invoice\bill a non-inventory item or service or other charge item

So here's the scenario- A Sales Order is placed on Customer A's account It gets fulfilled on an IF It gets Invoiced and sent to Customer A Customer A says- hey this isn't the right account, it should be on Customer B So we update the Invoice to Customer B which breaks the link between the Invoice and the Sales Order Then we update the Sales Order and Item Fulfillment to Customer B... But since there is an IF against the SO, inventory is taken out on the IF -AND- it's taken out again on the Invoice since the Invoice is now a "stand alone" invoice Maybe there is a better way to handle the scenario?

This happened to us before and we had to create a CM against the original invoice. That adds back the inventory. Then, we created a new invoice for the right customer. Not sure if there's a better way and if it will work for you considering the integrations, etc.

Ahh- that's actually helpful info. A CM against the Invoice would add that inventory back to stock? (Even though there is no RMA / Item Receipt)?

Yes, that's exactly the suggested method. CM to credit the invoice and credit the item back to stock. Then can either be a new SO/IF/IN or simply a new Invoice.

No - but just set the quantity of the items to 0