We are currently looking into and investigating reported save data issues for "Rise of the Ronin" steam edition.
We have found cases where changing the Windows Security Settings would solve the issues regarding save data.
Check Windows Security settings
Please check and change the settings per instructions below to see if the issue is resolved.
1. Windows settings > Privacy and Security (Update and Security on windows 10) > Windows Security > Virus & threat protection
2. Click on Manage settings under Virus & threat protection settings
3. Click on Manage Controlled folder access, under Controlled foldeer access
4. If "Controlled folder access" is on, click on Allow an app through Controlled folder access > Add an allowed app > Browse all apps, and add Ronin.exe
* The install location of "Ronin.exe" can be found through right clicking "Rise of the Ronin" on the steam library, or to click on Manage > Browse local files.
For details on Windows Security App please refer to the page below, from Microsoft.
https://support.microsoft.com/en-us/windows/virus-and-threat-protection-in-the-windows-security-app-1362f4cd-d71a-b52a-0b66-c2820032b65e
Check if Save data is saved to a different location
There are cases where the game would store save data directly on the "drive the game has been installed to", if security measures of the system blocked the normal save.
For example, if the game is installed to the D drive, the save data would be stored in the folder location as follows: D:\Savedata
Please try relocating the folder above, to the intended folder location:
\Users\user-name\Documents\KoeiTecmo\Ronin\Savedata
We are continuing to investigate this issues along with others. We will make sure to report back as soon as there are any developments.
We sincerely apologize for any inconveniences that you may have experienced.