I'm just going off what I know about the DeviceLogix editor: I know it's launched from RSNetworx for DeviceNet. I have not used the ArmorStart with EtherNet/IP.
I recently had to calibrate some POINT I/O modules using a 1734-AENT Ethernet adapter. Because the POINT backplane is functionally a tiny DeviceNet, I was able to browse to the 1734-AENT and open up the backplane, then right-click on a POINT module and run the RS-EDS parameter editor.
You might be able to do the same with the ArmorStart: browse to it and it might appear as a single DeviceNet node. I can't say.
There might be a completely different way to launch the DeviceLogix editor; maybe RA has made it launchable using the Add-On Profile for the ArmorStart.
This might be worth a call to RA Tech Support, or at least the distributor who handles RA products for you. Somebody's got to know the basics of that (relatively) new product.