(In reply to comment #4)

> [...] Unfortunately the fix seems not to be complete because with
> the following testcase class GlobalA is shown in Logical View but
> assigned to namespace NameSpace which is wrong.

Here is the fix for this case.
The fixing of your other test cases is still wide open, help appreciated.

umbrello/codeimport/kdevcppparser/cpptree2uml.cpp
- In function parseBaseClause(), before calling
  Import_Utils::createUMLObject() for creating the parent object, call
  Import_Utils::putAtGlobalScope(true). After creation of parent object,
  call Import_Utils::putAtGlobalScope(false).

CCBUG:336810