Is it possible to change dynamic groups on animated cloth in one simulation?

Till now I resolve problem making few clothes and few simulation in one scene.
I select constrained/choreographed/and another desired groups on my cloth. Calculate dynamic from 1 to X frame. On X frame spawn morph target, export object. Import saved object and make new simulation from frame X to the end, selecting another groups on second object. Later I change visible/unvisible parameters on animated clothes.

Is there any simplier way to change constrained group in dynamic?

No, once you set a dynamic group it persists for the entire simulation. But what you've done sounds like a good workaround.