: Always create a backup using a tool like Checkpoint on your modded Switch. This ensures you can revert if your save file becomes corrupted during editing.
Sharing account credentials with third-party services or transferring saves via "SysCFW" carries a risk of being banned by Nintendo. How to Use a Save Editor Kirby And The Forgotten Land Save Editor
For context on what can be edited within a save file, the following documentation outlines the game's progression metrics: Save File Metrics Kirby and the Forgotten Land : Always create a backup using a tool