HMRC online Corporation Tax filing

I file about 20 Corp Tax returns a year using HMRC online and since the new system came in I have problems when I've completed a return and then saved it for example to take the print out to the client for signature. When I come back the file thats saved is a hardcopy but I can't then resume and send it off. I have to retype the whole thing again and send it off whilst its open. I only use the tax return part the report and calcs I send as attachments. The helpdesk have checked my settings. Please tell me wise ones what am I doing wrong!