I switched over to elec/hydraulic so I removed my actuator(I disabled it from moving and took out the master cylinder).
You don't have to switch anything when you switch to disc brakes. You just need to rupture or remove the residual valve in the master cylinder. That's all that is different. The residual valve holds some pressure in the lines which is not wanted with disc brakes or it will make them drag.
remove residual valve
As you can tell, I have a bunch of experience with brakes on trailers. My family has had boats since i was 13 and I am 54 and I worked on them all. Many different drum brakes, disc brakes and many brands and models of couplers. My present trailer is on its 3rd type. 1st were drum brakes, 2nd Tie-down disc and now Kodiac disc.