The document cannot be saved as jpeg without losing information

[v_5741]

why always getting this dialog when saving  a jpg to a psd ?

i did not get this in the previous version of Photoshop.

[nbamom]

I noted that it only happens if there are multiple layers. Make sure to flatten the image if you won't need to work with the extra layers. Otherwise use Export As Jpeg to save a copy. The message gives an option to turn it off in the future, but I prefer to see it in case I have forgotten to flatten it.