Do not copy TC links to stories if user copy-pastes linked TC
Suppose you create TC and link it to story1, then copy-paste this TC and want to link it to a different story2, after you save copy-pasted TC it has links to story1 - it would be nice if user could define himself the links of TCs and there would be no automatic linking on copy-paste action.
A valid point - unfortunately the case when copying the link is necessary is at least as common as this one.
Fortunately there is a workaround - select the test(s) top copy, and use the "copy to test run" feature, and select the same test run (or library). This will duplicate the tests, and you have control over copying the links, attachments, tests.