Pin a posed mesh for shape key editing?

Is there a way to pin a mesh in a certain pose, so that when you go into edit mode to add a corrective shape key, the mesh remains posed?

I need to move the selected object’s shape key verts in order to cover up the visible skin coloured pectoral area, exposed when the character is posed this way.

Do not want:

Thanks in advance.

Use modifier while in Edit mode:


I don’t know if this will help you with your shapes, but in the modifiers tab in the armature panel, you can press the two options at the end that allow you to 1. see, and 2. edit, the modified mesh.

Beauty! Thankyou sourvinos and DruBan.