by Julieanne Kost
PSCS5 – In order to save a layered Photoshop file with a high resolution preview for other applications to use (Lightroom for example), it is necessary for Photoshop to create a “flattened” version of the image and save this flattened version within the file. I would recommend that you enable the option even though it will make the file size larger. To have Photoshop automatically save the flattened version, choose Preferences > File Handling > Maximize PSD and PSB File Compatibility… choose Always. In PSCS5, we added a “Don’t Show Again” check box when saving which will set the preference to Always.