CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 75% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
It depends on the type of order:
Pending Entry orders: Pending order to open a new position are cancelled before the rollover happens. You need to create the order manually for the new contract if you want to keep it.
Take Profit and Stop Loss orders: Take Profit and Stop Loss will be automatically reopened on the new positions after the rollover to secure your positions. This applies to Trailing Stop Loss orders as well.