@pieper implemented an ExportAs plugin for SlicerMorph extension which enables Export As a right-click context menu in the Data module. For markup nodes, this works 100% from the Markups module. For other data types (namely volumes and models) we have a strange issue that it works only on some windows and mac systems (seemed to be 100% functional in linux). There appears no diagnostic error message on systems that it doesn’t work.
Here is the discussion of the issue