I may have to do screen sharing to debug. Dreamweaver could be caching the data. Have you tried going to the Database panel and clicking "test"? That should cause a refresh. Other than that, it should be using the testing server settings to connect to the database and show the data. If you post your site definition file and steps to reproduce, then I can add your site to my Dreamweaver and see the issue.
The key to getting my help is allowing me to reproduce the problem. Once I do that, then I can usually fix it provided I have access to the files I need.