Hello rich2005!
I also noticed that PixLab has been absent for some time now. I hope he is doing well.
The script worked like a charm.
And to think that I spent a few hours on this task the other day.
I still have other conversions to do in the next few days since I am testing some new brushes.
Initially I had difficulty running the script because I could not find its location in any menu.
After going through the menus several times without finding the script, I used the shortcut "/" (key together with the question mark '?') and that way I had access to the script.
rich2005, thank you very much!
I also noticed that PixLab has been absent for some time now. I hope he is doing well.
The script worked like a charm.

And to think that I spent a few hours on this task the other day.

I still have other conversions to do in the next few days since I am testing some new brushes.
Initially I had difficulty running the script because I could not find its location in any menu.
After going through the menus several times without finding the script, I used the shortcut "/" (key together with the question mark '?') and that way I had access to the script.
rich2005, thank you very much!
.....
Samj Portable - Gimp 2.10.28 - Win-10 /64.
Samj Portable - Gimp 2.10.28 - Win-10 /64.