I was seeing my deleted images showing up on my desktop as cache files.
I placed an enquiry and received an authoritative answer in this forum.
The problem was determined to be an incorrect setting in the camera raw cache settings.My cache files wer directed to my desktop.
i had not altered my settings prior to this redirection of deleted images.
i was counseled to purge the cache and set my lightroom preferences to the default settings.
There is a box in file handling that reads "choose" but clicking on that box does not reset . So the problem persists.
My question is where is the default settings reset box.
If i find a reset button do i have to develop a new catalog and then set up my import images preferences again?
Please refer Resetting Preferences in Lightroom CC/6
All your images and presets(if opted) are saved inside your catalog.Its recommended to take regular backups of your catalog.To take a backup manually refer How to back up catalogs in Lightroom
Let us know if that helps.