Stefan,
Good news! This is an eaDocX feature, for all the reasons you describe.
There is a printable attribute for Classes, Attributes and Methods which is Element Features, which will print a hyperlink to another Class (or other element e.g. Requirement), Attribute or Method, which I think should give you the traceability you need. Search on “Element Features” in the eaDocX help, and that has all the details.
Thanks
Ian