Hi
the superseded link is released in 10.2
haven't test it in heavily. but can create it in a Change Activity (directly from impacted and resiulting datas tables) or "manually outside a change process" in the action menu
a specific table diplay a multi level superseded report (you can directly see the case where A is replaced by B, and then B replaced by C , etc ...)
and a specific glyph appear on the Part info page to inform that it is now "obsolete/superseded"
Good feature that I'm waiting for a long time ....
A best practice can be also to use BOM line numbers or find numbers . Notably if you use index baloons in your drawings. Replace A by B at the same find number
regards