Progress missing after switching platform with cross-save
Symptom
You switched platform with cross-save and your progress is missing. Autosaves do not transfer.
On the platform you're leaving, open the Save menu, pick the Cross-Save slot (bottom-right) and save manually. Wait for the confirmation.
Check: The game shows a save confirmation.
Close the game, launch it on the second platform and select the Cross-Save slot.
Check: Your progress shows up in the slot.
Still missing? Check that both platform accounts are linked to the same Pearl Abyss ID, the upload succeeded, and you're online (Offline Mode fails). Then press Refresh and restart the game.
Look at your local save folder and your Steam Cloud copy, and compare their dates before you overwrite anything.