When a file A is merged to a file B the content of A can’t be found anymore by searching for A.
In my case I use Obsidian as a note-taking app where every file is a single atomic concept (e.g. Mathematical Set.md, Protein.md, Force.md, …). Now if I come to the conclusion that Feeling.md and Emotion.md basically are the same concepts (though more differentiation always leads to better understanding) I merge Feeling.md into Emotion.md. Now it would be nice if I still could find Emotion.md by looking for Feeling.md via Quick Switcher (Ctrl+O).
Proposed solution
When A is merged into B then an alias A should be added to the merged file B.