I constantly keep running in to this issue.
I like to use DataObjects for lists of items on my pgaes, like images or links.
This works fine, no need for the DataObject Manger Module, just a DO.
Problem is when i duplicate a page (context menu in the CMS), the DataObject "references" gets lost and i'm left with adding all DataObjects manually to my page.
Can someone tell me how to get the DataObjects duplicated aswell? I think this most be something that some of you are using in your projects and i hope you will share some code or help me get it working.
I think it should be a matter of overloading the duplicate() method of the SiteTree class, but i dont know how this is done.
I've read all the threads i could find regarding this matter, closest thing i could find is this post: http://www.silverstripe.org/customising-the-cms/show/11571
Hope that someone can help!