One file, every language, one merge conflict
The old .strings layout gave each language its own file, so two translators working on two languages never touched the same lines. A String Catalog puts all of them in one JSON document, which means every translation lands in the same file and any two of them can collide.
Importing it into Linguiqo splits it back apart: each language becomes a language, each key becomes a string, and the file is written once on the way out.