https://dl.dropboxusercontent.com/u/40671983/UDKToUE4Tool/UDKtoUE4Tool_v1.2.zip
I’ve updated both the currently released version (1.2), and the forthcoming paid (2.0) version to support vertex colors.
However, a note on Vertex Colors: While the tool does support the porting over of Static Mesh vertex colors. There is an issue that may prevent them from working.
The import/export process of meshes is sometimes not 1 to 1. A mesh that is re-exported out of UDK may not have the same structure as it actually does inside UDK. This means that although the Vertex color data is there the T3D script and is converted, it won’t appear up on the UE4 mesh because technically, it’s a different mesh now.
In order to fix this issue, You can try re-importing the mesh back into UDK. This means both engines have the exact same data to work with, then copying the actors.
I’m currently exploring my options on how to step a way to purchase the 2.0 version.