AutoCAD Inventor :: Import XML Files To Materials Library

Does a process for importing INDIVIDUAL materials (saved as some_material.styxml) that had been exported from Inventor 2011 or 2012 into the 2013 Inventor Material Library?

I am not asking about converting the old libraries -- I know how to do that -- these are materials that were created for one-time (supposedly) use and exported from the 2012 Inventor file, but never saved to the older Inventor styles libraries. Operation was EASY in 2012 -- click the "Import" button on the styles manager dialog box.

No such button on the new materilas library manager, or am I missing something?

Only way I have been able to do this is create a 2102 part, import the STYXML file, apply the material to the 2012 part, then save the part & open it in 2013 & let 2013 import the style. Once the material style has been imported this way, it can be added to the Inventor Material Library, but this is a really nutty workaround that requires Inventor 2102 to be available...