With regard to the advance payment guarantees granted by the Export Credit Insurance Corporation described in recitals 209-232 of this decision, Poland shall recover aid equal to the difference, for the period between the time when the aid was awarded and the time when the guarantee expired, between the guarantee premium paid by the recipient and the guarantee premium at which the recipient could have obtained the guarantee on the market. In addition, if any of these guarantees is open at the moment when this decision is taken, it shall be terminated immediately.