Testing with this demo here (http://demos.telerik.com/aspnet-ajax/editor/examples/import-export/pdf-export/defaultcs.aspx) links are exported fine.
If you are using an old version of RadEditor, make sure to update it and test again.
If you still have issues with the exported PDF, please sent us a support ticket or open a new forum thread (as this is a two years old discussion) with more details about the exact scenario.
Telerik by Progress
Do you need help with upgrading your ASP.NET AJAX, WPF or WinForms projects? Check the Telerik API Analyzer
and share your thoughts.