Hi,
In Edocman Configuration, there is a configure option: "Redirect after uploading".
If you select option: "Main Category Page", you should setup menu to Edocman Categories or Edocman Category layouts. Thus, component will find corresponding menu item and redirect user back to the found menu.
If you don't have any menu to Categories or Category layout, Edocman will add Itemid 9999 into the redirected link and redirect user to Edocman main page.
Thanks
Dam