The previous update introduced Steam Cloud support, but unfortunately it couldn't pick up older saves in some situations. This update should fix the problem and mirate your save files.
If you haven't played the game or haven't created any new save files on version 1.0.2, there's no need to do anything: your older saves should migrate properly this time.
If you've created a new save file on version 1.0.2, you need to migrate your save files manually. Here's a migration guide:
Press Win + R, write "appdata" (without quotes) and press Enter
From there navigate to "LocalLow\\SmelJey\\Into the Depths\\Saves". It should look like this
Copy your save files
Open Steam Library, right click Into the Depths, select Properties
Open Installed Files page and click "Browse" button
Navigate to the Saves folder. Inside, there should be another subfolder with a numeric name. Open it.
Paste your saves files into this folder
Migration complete
I'm terribly sorry if you've been affected by this issue.
Note: If you haven't played version 1.0.2, or if you haven't created any new save files in that version, please don't do anything. The saves should migrate automatically