Yeah you can rename your groups in poser. This will only propagate to a poser saved .obj file though. I tend to stay away from any in Poser modified .obj files, I don't like the variables and additional lines of Poser specific (useless IMO) whatnot that Poser adds.

Quick tip: take your .obj and change the extension .obj to .txt.

Open that file in a text editor.

Let's say you have a group named AB1 that you would like to rename abdomen.

Search/find with the text editor: g AB1

The text editor will locate the line g AB1

Change that line to g abdomen.

Save your file (always keep an unmodified backup though) as .obj or drop the .txt extension.

What you have just done is located the group AB1 and changed its name to abdomen. It's that simple.

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