So modes work on the way in, but if you want to write a layered PSD file out (Composition>Save Frame As> Photoshop Layers), there are a few modes that are not supported. After Effects will substitute the closest equivalent if you've used the following modes.
| Dancing Dissolve | > | Dissolve |
| Classic Color Burn | > | Color Burn |
| Add | > | Linear Dodge |
| Classic Color Dodge | > | Color Dodge |
| Classic Difference | > | Difference |
| Stencil Alpha | > | Not supported |
| Stencil Luma | > | Not supported |
| Silhouette Alpha | > | Not supported |
| Silhouette Luma | > | Not supported |
| Alpha Add | > | Not supported |
| Luminescent Premul | > | Not supported |