Every futures deal has a ‘rollover date’, which is sort of like an expiry date. When an open deal is not closed before that predefined date, it is ’rolled over’ automatically by iFOREX UK and extended to the next contract rollover date, which allows the deal to remain open. During rollovers, the specific deal’s open P/L (Profit / Loss) rates are adjusted according to any existing price difference between the expired and extended contract prices. The open P/L will only be subject to a mark-up spread. Any existing limit orders will be adjusted.