3D Diffuse Texture - How swap psb files?

Hello All,

I have a 3D object which has a diffuse texture painted on part of the object.

This object was exported from separate 3D software as an OBJ file and then imported into Photoshop. 

The file which comprises the current diffuse texture is named "Layer 0 copy.psb[.]"

I do not like the name of the current PSB file, plus it is a bit of a messy multi-layered texture.

I desire to replace the current PSB with a different, better named and organized PSB file.

Q:  Is there a way to replace the "Layer 0 copy.psb" file with the better, simplified, and newly-created PSB file?

Thank you,

edsager