Correct, plus this scenario.
Whats to say you buy Fuji gear from suppliers who have a 28 day returns policy, with no questions asked. You could buy the Fuji gear, put a claim in after 14 days, carry on using the equipment until the 27th day after purchasing, you then put a request to supplier for a full refund as you have changed your mind. In this case Fuji would have possibly paid out cashback or sent a free lens. You have returned your original purchases and you are then up on the cashback or freebie you have received from Fuji.
Are Fuji dragging out there offers to stop the above case scenario working and are checking against serial numbers???
When I bought my 35mm & 55-200mm for the £300 cashback earlier in the year, the 55-200mm was sent without plastic packaging which my other lenses had come in. I returned lens, as I didn't want the possibility of having a demo due to no polythene packaging. The lens was returned and a replacement was sent with a new invoice for 55-200mm. In this scenario, I had the original invoice which enabled me to claim £300 cashback for the two lenses, I also had a new receipt for the 55-200mm lens, which at the time, Fuji were giving £100 cashabck for one lens purchase. If I was dishonest, I could of tried claiming the £100 cashback for the replacement lens. If succesfull I would have claimed £400 cashback for the two lens I purchased. £300 for initial receipt, and £100 for the replacement 55-200mm lens.
Hope the above makes sense.
If I was running Fuji I would have something in place to stop the above scenario happening.