Links in the artifact primary text not shown in the links section
Accepted answer
When you create the link you have to specify a link type (at the top of the Create Link dialog). The default is "No traceability link", which means that the link will not appear in the links section (and won't be visible outside of the text artifact). You can also create a matching traceability link after you've created the initial link without it -- right click on the link and choose Create Matching Trace Link.