noel

I think you are confusing terms. Futures price is the price of a contract traded on a futures exchange , while spot is the price prevalent on spot market ( usually brokered by big banks ).
The futures price will converge close to the spot at expiration and probably at no other time . If the vignette doesn’t tell you that hedge is lifted at expiration of futures contract ( or even if it did , but listed the futures price seperately ) , do NOT calculate the P&L on the Futures hedge  using the spot exchange rate .
Use Futures price for sell and for lift also.
Lifting the hedge means closing out your Futures position so you buy equivalent number of futures contracts to offset your short position . The price of the futures contract is relevant and not the spot price