Appearance Browser - editing inside a category

[Anonymous]

Good day,

I've created a new library, in the appearance browser and then a category inside called mesh. Somehow I cannot edit the appearance of what I've called Flatex338... I can add it to the current document and then edit it, but cannot edit the original or 'master' appearance. Any ideas? See screenshot. I am assuming the solution is very simple 

I'm struggling with the changeover to 2013 with this appearance and materials. Downloaded a document on it from Autodesk but it's only about 30% useful.

Thanks,
Adrian

[Anonymous]

The only way to get around this is for me to double click the Flatex338... where it is under the library, then edit it, then the freshly edited appearance is sitting in the document, so I click it there, and add it back to the library and say replace. I'm not certain if this is the ideal or correct method but I guess it does work. 

If anyone has any better solutions please do share. Thanks!