I'm trying to move my Crawl and Property DBs to another SQL Instance and I'm having a really tough time getting it working.  I'm using this article, and the commands for Set-SPEnterpriseSearchCrawlDatabase aren't complete...

http://technet.microsoft.com/en-us/library/ff851878(v=office.14).aspx#search

I'm seeing 'All Errors' on the Search Admin page.  When I tried to modify the topology and point the Crawl DB to my new server I got "The specified database is not empty".  The method for moving crawl and property DBs is very confusing.  Has anyone done this before?

Hello

You should only need to use powershell to move the administration database, you can modify the crawl/property databases from the search administration site in CA.  I am confused why you're using a combo of

When I change the Database Server property in Central Admin, it says 'The specified database is not empty'

I assume you're using a SQL alias for your second instance?  Is it configured correctly?