Dedupe/tidy folder - File names ?

[bob_a_builder]

Tried to use this feature on a folder but the proposed (new ?) filenames are showing what seems to be some of the program description and original files are renamed to those names too

Before dedupe


After Dedupe


Viewing the original folder in Webif afterwards


Why are the original files being renamed ?
Why is the proposed name part of the program description ?

TIA