No. Saves are separate from update files. However, if you downgrade from a newer update to an older one, your save may become unreadable.
Alternatively, you can also download the updated NSP file directly from the eShop. moonscars switch nsp update eshop
Cumulative patches that bring the game to the latest version (e.g., v1.0.3 or higher). DLC: Any additional content released by the developers. your save may become unreadable. Alternatively
: The developers released significant updates to address these issues. moonscars switch nsp update eshop
If you own the eShop version, your Switch automatically downloads updates. But for those manually seeking the update file (often searched as “Moonscars switch nsp update”), here is the verified changelog from official patches.