Uploading the update/insert content pages and the HTMLEditor Folder should do it. You could try clearing your browser cache.
Worth looking out for is that if your PowerCMS files and Folders - including the HTML Editor folder - are in their own folder within the root folder of your site (i.e. 'CMS' folder), then making changes through the HTMLEditor UI will create a new HTML Editor folder in the root directory of your site which confuses matters.
The safest way to deal with this is to create a second site definition with the CMS folder as the root directory.
Go to 'Manage your Sites' in the DreamWeaver menu ('Sites'). Select your site and create a duplicate. Click 'Edit' to edit your duplicate site. Change the local and testing server paths for Local Root Folder, Testing Server Folder and (Testing Server) URL Prefix to the folder that contains the PowerCMS files and folders. For Instance, all references to these folders in my site that are currently: C:\Inetpub\wwwroot\Pictuality\ would become C:\Inetpub\wwwroot\Pictuality\CMS\.
In the Local Info screen for 'Site Name' just add the suffix 'CMS' to your site name, and save the site definition. Now (and whenever you want to), using this site definition, you can re-enter the HTML Editor UI and make changes without HTML Editor creating a new directory and big problems.