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Develop module Thumbnails disappear after Merge > HDR operation

Joined
Nov 16, 2015
Messages
1,730
Location
California, USA
Lightroom Experience
Intermediate
Lightroom Version
Classic 8
Operating System:Windows 10
Exact Lightroom Version (Help menu > System Info):7.1

After doing my first HDR operation (from NEFs), one of the source files doesn't display in the Library grid view. I tried to re-import the missing image, but Lightroom won't do that since I have LR configured not to re-import duplicates. If I inspect the Windows folder where the missing thumbnail file is stored, I can see the original NEF file.

First, I did an HDR involving 3 NEFs, then a second involving only two of those NEFs. Lightroom shows a thumbnail only for the second HDR, but the actual DNG file for that first HDR is clearly in the Windows folder.

So what do I do to display the missing thumbnails?

Phil
 

Cerianthus

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Joined
Jan 4, 2014
Messages
236
Location
Netherlands
Lightroom Experience
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Lightroom Version
6.x / CC 2015.x
is there a filter of some sort applied, or a sort order ?
what do you see if you go to the folder in LR ?
 
Joined
Nov 16, 2015
Messages
1,730
Location
California, USA
Lightroom Experience
Intermediate
Lightroom Version
Classic 8
is there a filter of some sort applied, or a sort order ?
what do you see if you go to the folder in LR ?
In the Windows folder, I can see the NEFs for the thumbnails that are missing. There are no filters on the grid view in LIBRARY.
 
Joined
Nov 16, 2015
Messages
1,730
Location
California, USA
Lightroom Experience
Intermediate
Lightroom Version
Classic 8
Are the images stacked? I believe there is a bug in 7.1, but I'm not entirely sure. Do a search on feedback.photoshop.com
The images were stacked so that I could better organize this shoot. But if I remember correctly, I unstacked the group in question before doing the HDR operations.

I did a search on feedback.photoshop.com and didn't find any other posts with this issue, so I started a new thread.
 
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