Container Field - Import of PDF file only pulls reference

[Landy Atkinson]

I created a database to hold some one page PDF files that are the  
output from a mechanical drawing program.  I defined a container field  
to hold the PDF and then used the Import Records script step to pull  
in a folder of PDFs.  During the import, I unchecked the box "Import  
only a reference..." and so expected the PDFs to become part of the  
database.  Instead, I seem to be getting only references.  If the file  
computer with the shared folder of PDF drawings is not connected, the  
container field gives the message "The file cannot be found."  If I  
reconnect to the folder of PDF images, then all is well again.

Is this the expected behavior for PDF files?  Anyway to actually pull  
copies of the PDF documents into the database?

-Landy