We have an old website dating back to 2004 that's having a revamp. Trouble is, it is being moved to Wordpress and they apparently only publish lower case URL's, when the existing site is Upper_and_lower.... so I opened up a line of questioning specific to that here : [webmasterworld.com
Actually I wonder if they accept underscore [ I believe they do ]
Additionally, I guess there is a mod rewrite option, but I guess I need some advice separately on that.
However from a purely Google standpoint, when there is great sensitivity and nervousness around SEO stability, does it really matter one versus the other ? Does the redirect potentially destabilize a site [ provided it is done properly ].
These sites are not exactly high quality at this stage, but we have to migrate and will push good quality content into the new design asap.