hi,
don't think it can be done (standard)
Print-to Word \ Excel \ Pdf is the " saveas " standard command called by the NAV. NET Framework ( export standard comamnd for reports, such as usable by NAV Windows Client ) is not expected saving of document templates , others ERP (ex: Dynamics GP) manage the " saveas " on models (templates) insteaf of documents.
Test :
Trying to insert your report in "printer selection" table per user configuration ( such as the Web client uses for RTC ), sets the margins on the printer that you have set up and see if the Web Client by saving on word keeps them .
use background posting:
If you enable Background Posting, you can "Post and Print" from WebClient.
See here how to enable Background
blogs.msdn.com/.../background-posting-and-job-queue-in-microsoft-dynamics-nav-2013.aspx
Feature Limitations of the Microsoft Dynamics NAV Web Client
msdn.microsoft.com/.../hh168959(v=nav.71).aspx
How to: Specify Printer Selection for Reports
msdn.microsoft.com/.../hh166859(v=nav.71).aspx
Printing Reports from a Background Session