Skeletal mesh sections with cloth should have their visible mesh match their simulated mesh and this should be effected by painted values. Any vertices left unpainted(at 0) after the initial paint, or painted when the cloth has already been applied, will no longer effect the visible mesh, creating a mismatch between the visible and simulation meshes, regardless of subsequent paints.
This is a regression from 4.23
Open a skeletal mesh.
Check Character->Clothing->Physical Mesh in the preview viewport.
Create and apply a clothing data for a section.
Activate Cloth Paint and paint some values for the clothing data.
De-Activate Cloth Paint.
Expected: The visible mesh is effected by the painted values and follows the simulation mesh.
Result: The simulation mesh is effected, but the visible mesh remains unchanged.
This was not the case in 4.23
Note that if you paint before applying then the painted values will effect the visible mesh as expected, but any vertices initially unpainted will continue to ignore the visible mesh even after successive repaints.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-86367 in the post.