This setting is persistent, so you’ll only need to set it once.
Ensure that the area at the bottom of the File Compatibility area is set toAlwaysorAsk.
Turning this option on, however, results in larger file sizes.
If you only need this feature occasionally, set it toAsk.
This way, Photoshop will ask you if you want to maximize compatibility every time you save a file.
When this compatibility option is invoked, the layers are saved along with a flattened composite of the image.
The effects added with the newer version are included in the resulting file.
If the file is edited and saved in the older version, the unsupported features are discarded.
For example, some newblending modeswere added to Creative Cloud sincePhotoshop 6came out.
The same applies when opening Photoshop files in other non-Adobe software that reads PSD files.
Some programs offer aSave as PSDoption.
Each program saves a specific version of a PSD file.
