How to reset all NLP's settings in Lightroom?

Sometimes I would like to reset the conversion done by NLP to a negative within Lightroom.
That means that I would like to be able to undo all settings done by “Convert negatives” and further on “Tones”, “Brightness”, “Contrast” etc. so that I get back to the negative.
Actually I have to remove the image from the Lightroom catalogue and import it again to be able to use
NLP again with different settings.

Is there an easier way to achieve the same result?

Thanx and best regards

Dietrich

You should be able to Unconvert images also. That allows you to start over with the image.

Hi Kenny,

thanks for your advice, now I found this function in NLP.

Best regards

Dietrich