Solved
smacdonald2008Accepted solution
Level 10
October 26, 2016
See this Movie component and the tabs - there are all sorts of fields on the dialog - including a drop-down,

This value is displayed when i close and re-open the dialog -- the way it should be.
See:
https://helpx.adobe.com/experience-manager/using/htl_movie62.html (for AEM 6.2)
Compare this code/JCR Nodes with your content.
You can install the packaeg and see the dialog as well.
Hope this points you in the right direction.
