Unable to move or add files from a memory card

[Perlsowisdom]

I’m not sure if this is a feature or a bug, but I’m unable to add any photos on a memory card to my library using the context menu.
This is greyed out for both move to and add to.

[Soenke (Sönke Ludwig)]

This is currently a functionality that only works for files that are already part of the library, but apart from that being caused by implementation details, there doesn’t seem to be compelling reason for that limitation. I’ll look into this.