Objects seperate after going to edit mode

Hope I am in the right place to ask this. I have three objects, a mesh of a body, a night gown, and a top coat on my mesh. But when I got to edit mode the objects just offset and when I go to Object mode, the come back but need to align them all to bring them together. Is there a way that I can go into edit mode and the object just stay put?

Check for hidden vertices
Check any modifiers or constraints that may be being used

Supply simplified demo blend file for review

Richard here is what I am talking about, when I click on the mesh. Main lead overcoat boots4.blend (5.8 MB)