I realize now that changing your permalink structure once you have any amount of content on your WordPress site is a bad idea, simply because your old URLs will still be in Google, and many potential visitors will only see a 404 instead of the desired post.
This is the boat I'm in. Is there anyway to achieve either of the following:
1) Create secondary permalinks for each post, so that if someone from Google visited the outdated permalink structure it would still load the post.
2) Somehow notify Google's search engine to refresh it's listings of my site.
Is this not that big of a deal? Will Google hopefully update my links in related searches sometime soon? I updated my permalink stucture a few weeks ago, but no luck yet.