Unlike Windows, HoloCure save data will not transfer automatically on the Steam Deck.

Here's how to transfer Save Data from the original Switch to Switch 2.

When using the Nintendo Switch 2, you can transfer the save data from your games even if you have not performed a full system transfer from your previous console, or even freely send your save ...

Hololive Fan-game Holocure has released on Steam, and the developer has explained how to transfer save data from previous versions.

Our guide for how to transfer save data to Switch 2 explains each step of the process. How to import save data during Switch 2 setup Save data is included in your system transfer.