getUrl using my original develpment server domain
Have you checked the path of the asset source the image is in? Sounds like that might still be the old server's path.
Best practice is to use Environment-specific variables in your config file, and then use those in you Asset Source settings as well.

So, use {basePath}assets/site as your File System Path for instance (if you've used basePath as a config variable). 

That way, it will adapt to whatever environment you're working on.