Guys try using a baked morph animation (every 2 or 1 frame) instead of Alembic (Cloth doesn’t change topology), not only will it be lighter on performance and file size, UE will also keep it skinned and preserve the integrity of the motion as well as timing since it is imported as one skinned mesh.
There is a small setup to be considered though and a few rules to follow plus writing a few custom scripts to bake the process in case there isn’t one in your 3d application of choice.