Layer style support was improved a lot in After Effects CS3. I wouldn't be surprised if a layer style didn't come through well in After Effects 7.
In After Effects 7, layer styles had to be converted to effects, and that conversion was not always perfect. In After Effects CS3 and later, the Photoshop renderer is inside of After Effects, so the fidelity is much nearer to perfect.
I thought so that this was the case. But could not test.
Thanks for the quick respons.