For those of you who have access/trade FX CFDs with Interactive Brokers, can you confirm that the execution of a LIMIT GTC is similar to that on an exchange, i.e. it is always filled at the limit price or better and there is a possibility of a partial fill after which the remainder stays in the order book? In my understanding, an order placed in IBKRCFD market is immediately replicated in the underlying (Spot FX) and can affect this underlying market - implied by DMA execution model. Just looking for practical confirmation this is the case.