This morning I used Chirp for the first time with this radio.

CHIRP daily-20191110.

I downloaded from the radio and saved an .img file. Then I started putting in the repeaters, and looking around at the settings. When done I uploaded to radio and all is fine. Until tonight.

I wanted to make some changes so on a different computer in my shack I download from the radio and made a new image. Played around with some of the settings. I uploaded and downloaded a few times.

Then I noticed that the settings screen is now blank. There is nothing there to edit. Radio still works.

I came back in the house and opened the first image I made and the settings page is there. So at least I have one image with the settings intact. 

What could have happened?