I have this mesh:
I'd like to copy the highlighted vertex group to the other end of the mesh, here:
I've duplicated (shift-D) the selected vertices and moved them to the other side by grabbing, until I got what I wanted:
Anyway, the resulting object is made by 2 different objects which can be separated with separate by loose parts. How can I attach the object to the final point so that they're only a single object and cannot be separated (one single geometry)? Thank you
EDIT: the underling vertex geometry to both top and bottom is the same