I was wondering whether the seo work that I am doing for my website, such as building back links and such, can be carried over (the linkjuice I think it's called) if the site goes through a url restructuring. I really need some advice.
Use strictly 301 redirection techniques to preserve PR of old urls in case of redirecting to new urls.
yes if you have link from high pr site and stable for long time then it surly help you via link juice to gain higher backlink for you website.