Yes, I was taught to remove non soak off gels by filing, which I did before.
But after converting to Brisa gels, the instructions for removal were as I described earlier: Thin the product to a minimum, use warm product remove soaked in cotton pads and wrap around the fingers with foil. After 20-40 minutes remove the pads and remove the softened product from the nail plate with an orange wood stick or similar. After this comes washing hands and nails and moisturizing them with SolarOil and a nice moisturizing lotion.