"Edit in" saves a version to disk on return to Lightroom
I am building a new photo editing computer. On my old one, this does not happen but it does on the new install.
Suppose I have a photo on the desktop. I go into lightroom and create a new catalog on the desktop. I import that one photo. I right-click on the photo from the bottom preview line and choose "Edit in" and then selct Photoshop or Portraiture for instance. I usually choose the option to edit a copy with Lightroom adjustments. I do my edits in the other app and when I return, I have the two images on the bottom ... one without the edit and one with the edit. But, when I returned to Lightroom, it also put a new version of that file to my desktop so I now have two versions of that image on the desktop. I didn't export it, but a new version just shows up on the desktop. My previous build did not exhibit this behavior.