Am Samstag, 10. September 2016, 17:15:07 CEST schrieb Jean-Luc CECCOLI:
> Hello,

Hi.

> I rencently wanted to merge some settings to a binch of photos.
> 
> I set everything to the first one, adjusted to fit my taste, then copy the
> selected values, and finally pasted those same values to over 1200 photos.
> 
> At this time, I realized that I had left the parmeter set to overwrite
> instead of merge (or stack, I don't remember the english parameter).
> 
> Anyway, I lost all the previous settings, which is terrible since I had
> spent over 5 hours (at least) to get the photos match what I wanted.

That is unfortunate. :-(

> No worry, I thought : I had exported them to jpeg, so it might be easy to
> retrieve the settings.
> 
> What I did :
> 
> 1- erase the entries from the current library
> 
> 2- close DT and rename the current library
> 
> 3- import the jpegs, save all as sidecars and close DT
> 
> 4- rename the sidecars from .jpg.xml to .nef.xml and replace those in the
> pictures' directory
> 
> 5- delete the newly created library and restore the previous one

While the exported JPEGs contain the XMP data, darktable won't read them like 
that. What you should try is using the exiv2 command line tool with the "-pX" 
argument to extract the sidecar.

> 6- open DT, re-import the folder containing my photos.
> 
> At this time, I expected to see the history for each photo, but, despites
> the fact all seem to display as before I overwrote instead of merging, the
> only entries in the history are Original and Orientation.
> 
> So, when I attempt to apply the new settings as I first wanted, they display
> over-over-over-exposed.
> 
> Any idea what I could have done wrong ?
> 
> Regards,
> 
> J.-Luc
> 
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