camera raw gradient tool

Anybody,

I am having an interface problem.  I am used to using gradients in Camera Raw but since the new interface I have been unable to do several things that are very important to me.  My issue this morning is I can not figure out how to erase a gradient that put on an image.  The interface, unlike before, has become completely unintuitive.   Here is an example of what I am talking about.  I ran a gradient across an image.  I did not notice that one of my sliders was set to dehaze.  I was going fast.  I closed the image.  I reopened raw and I can not find that gradient to erase it.   I can't see it but its there.  I and it is messing with my saturation.  I cant figure out how to reset the image to its original state.  I had to resort to going to my desktop finding the xmp and throwing it away and starting over. I have been using this Please tell me how to get rid of that gradient in the interface provided.  Sincerley anoyed. I have been using this interface for months and most of the things I used to do quickly take much longer.  I thought I would be able to adapt being a long time photoshop user but I am finding a few things really frustrating.