Okay, I follow - and I can confirm that I get the same results. So yet another example to throw into the pot !

# File 'TheCube.obj'
# Blender v2.77 (sub 0) OBJ File: ''
# www.blender.org
o Cube
v 0.100000 -0.100000 -0.100000
v 0.100000 -0.100000 0.100000
v -0.100000 -0.100000 0.100000
v -0.100000 -0.100000 -0.100000
v 0.100000 0.100000 -0.100000
v 0.100000 0.100000 0.100000
v -0.100000 0.100000 0.100000
v -0.100000 0.100000 -0.100000
s off
f 1 2 3 4
f 5 8 7 6
f 1 5 6 2
f 2 6 7 3
f 3 7 8 4
f 5 1 4 8

PP2014(32bit) default scene, deleted Andy, imported TheCube.obj

External Name = TheCube (Internal Name = TheCube)

'When you import an object file, it imports with the name exactly the same as the saved object file.' - confirmed.

Saved this prop as 'TheCube.pp2'

{
version
    {
    number 10
    }
prop TheCube
    {
    geomCustom 
        { 
        ...
        } 
    }
prop TheCube
    {
    name    TheCube

Started a new scene, deleted Andy, loaded 'TheCube.pp2' three times

External Name = TheCube_1 (Internal Name = TheCube)
External Name = TheCube_2 (Internal Name = TheCube 1)
External Name = TheCube_3 (Internal Name = TheCube 2)

---

The 3Dcheapskate (also available in DAZ and HiveWire3D flavours) occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.