Before my question gets marked as duplicate let me explain that I did my research. This question is about Photoshop CS6. Hopefully the feature was added in this version. Before posting I looked up Google and this and that but didn't find an answer for CS6.
So the question is: Is there a feature within CS6 or a script that allows to resize a vector element with rounded corners without using the Direct Selection Tool (white arrow tool) and not changing the border radius? What would be great would be something like simply using the transform tool or something like a grid resize tool.