Endnote XI - PDF Images converted to Figures

Just upgraded to Endnote XI from 9.  On opening my old
Endnote 9 library
I find that all the PDF images attached to the records in my
library
have been converted to Attached Figures rather than Attached
Files.  Any
idea what I have done wrong here? or how I convert them to
Attached
Files.  Have I missed something basic?
 
Many thanks for any help, and apologies if I am being dumb.
 
David