Magento layered nav attributes not showing

Question

I'm using drop-down attributes and setting them with 'Use in Layered Navigation' but there not appearing.

Any sugesstions why?!

Answer 1

1. Click on category->display setting-> Is anchor set to "Yes".
2. Open attriboue and set layered navigation -> yes.
3. If still not working, reindex from system->index management

Answer 2

When in doubt, clear the cache and rebuild the indexes.

Answer 3

Think Ive sussed it out IsAnchor=Yes needs to be turned on directly for the category with products in...

Is there a bulk upload that can be used to import / create these attributes?

Answer 4

Layered navigation must be enabled in attribute options and category "Is anchor" option must be set to "Yes". And it works just fine.