Editing a downloaded document "in place" and re-uploading it

Question

We're using the following procedure to download a document that has previously been uploaded to a BLOB field in the table.
create or replace procedure download_doc (req_id in varchar2) as
v_mime varchar2(48);
v_length number;
v_file_name varchar2(2000);
v_blob blob;
begin
select resp_mime_type, resp_doc_content, resp_doc_name, dbms_lob.getlength (resp_doc_content)
into v_mime, v_blob, v_file_name, v_length
from <tablename>
where id = req_id;
owa_util.mime_header (nvl(v_mime,'application/octet'), FALSE);
htp.p ('Content-length: ' || v_length);
htp.p ('Content-Disposition: attachment; filename="' || v_file_name || '"');
owa_util.http_header_close;
wpg_docload.download_file (v_blob);
end;
The issue we're running into, is that when a user wants to download a document, the user is presented with the choice of opening or saving the downloaded document. That works OK, but what we'd really like to do is offer the user a chance to edit the downloaded document and then by saving the changes (such as by closing the window in which the downloaded document appears, after making edits), the modified document is "re-uploaded" to the database. What we have to do now is save the download document to the user's PC, then the user has to open the document and modify it, save it, and re-upload it to the database.
Any ideas on how we can save the users a few steps and upload the document directly after editing? Thanks.

Answer 1

Then the answer is no. The file needs to be saved down to CS5.5 or exported as IDML from CS6.
Mylenium