Can interests be inactivated in the TR_TKW system table rather just deleted? Also, what does the checkbox labeled "Ftsearch Ind" do?
We have a control group called "archive" that only administrators have access to. We use that to essentially inactivate no-longer-desired tkw (and other things that are control groupable but not inactivateable).
The ftsearch_ind makes the keyword part of the full text index on the perf, if the keyword is on a perf.