I have way too many subcategories (I imported dmoz several months ago). Is it possible to delete the actual sub-categories and have the links moved to the main category without having to manually insert 200k links?

Example Of Existing:
Automoblies>Foreign>European>German>New>Blue

Example of my Wish:
Automoblies>Foreigh>

I want to cut down the clicks it takes my surfers to find things.

Any thoughts? Idea?