Forwarders sit between the exporter and the physical movement of goods, and they prepare much of the documentation the rest of the system relies on. A forwarder that routinely amends documents after issue at a customer’s request, or that accepts delivery addresses in place of a declared end user, is doing something the export control system depends on it not doing.
BIS enforcement material treats delivery to a forwarder rather than to the stated end user as a standing red flag for exactly this reason.