Even though you no longer have active DB benefits it's still important that you review any Additional Voluntary Contributions (AVCs) or bonus sacrifice savings that you have, whether they’re invested in the DC fund range or with another external provider.
Whatever your current investment option is for your AVCs or bonus sacrifice savings, it’s always worth checking out whether it’s still right for you. If you have AVCs or bonus sacrifice savings with an external provider you should receive statements of your benefits from that provider. You should also review your Target Retirement Age regularly to ensure that this is in line with when you think you’ll take your overall benefits (assuming that you want to take your DB benefits and AVCs or bonus sacrifice savings at the same time). The value of your AVCs or bonus sacrifice savings is not guaranteed and will rise and fall in line with the price of the investment funds used for your investment choice
It's up to you to decide how your money is invested.