VintaSoft PDF .NET Plug-in Discussions

Hi,
I am trying to copy and paste annotations from a PDF document to a different PDF document in my application.
I am unable to use the Copy and Paste UI actions because I want to specify where they are to be placed when I am pasting.
When I perform the copy, I add the annotations that I want to copy into a List of annotations and then add the annotations to the document when I paste. This is working fine.
However, when I unload the document, and load a new document, I loose reference to the annotations in my copy list. I want to keep the list of the annotations so I can paste them into the newly loaded document.
Is there a way I can do this?

Thanks
Harlan