I just implemented IContentControl in a usercontrol following this KB article: http://www.sitefinity.com/support/kb/article/sitefinity-3-x/how-to-wrap-a-generic-content-control-in-3-6-sp1.aspx
I set all of the IContentControl members to [Browsable(false)], but when I go from the content editing tab to the advanced tab, then back to the content tab, all of my content is gone.
When I changed the Content member of IContentControl to be [Browsable(true)], there's a Content text box showing on the advanced page, with the HTML content in it. The content is still there when I go back to the content editing tab, but I'd prefer not to expose the Content member to the user. Is there a way around this?