SUMMARY
***
I have a selection list out of Digikam, and I want to query/maintain all the files in my list. And the revers action is: I've selected multiple files in Digikam and want to export the selection as a plain text list, below is the examples.
***
# "Import list example":
In my Digikam, I have 4 photos:
IMG001.JPG
IMG002.JPG
IMG003.JPG
IMG004.JPG

From other source, I have a list
```
001
003
004
```

After import the list, I want IMG001.JPG,IMG003.JPG,IMG004.JPG(fuzzy search or exact match) being selected in Digikam, and then I can proceed to add tags, rating, etc. for only these 3 photos.

# "Export list example":
In my Digikam, I have 4 photos:
IMG001.JPG
IMG002.JPG
IMG003.JPG
IMG004.JPG

I select IMG001.JPG, IMG003.JPG, then I want to export my selection, expected .txt file should be:
```
IMG001.JPG
IMG003.JPG
```

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In above examples there're only few photos, but in my scenario there're thousands of them, so I wish I can export/import the selections.