Armature mesh edit snaps back returning to Object mode In the attached blend file I am able to take a mesh modified by an armature and edit some vertices in Edit mode by disabling Shape Keys:

However, when I'm finished editing, the moved vertices snap back to their original position once I reapply Shape Keys or switch back from Edit to Object mode.
How do I make these edits persist?   FYI: The mesh and armature was imported from a DAZ file.
Blend file (too large for blend-exchange.giantcowfilms upload) is at amatureMeshEdit.blend
this post was helpful for a better understanding of Shape Keys and the purpose of the 'Basis&quot; key:

select 'Basis' Shape Key
in object -&gt; Edit mode, make my modifications to the mesh
exit object EDIT mode and the changes stick