Trend sqlth_scinfo and sqlth_drv table duplicates added every x months

@nminchin did you ever get an answer on this? I'm having the same issue on 8.1.7 and I'm wondering if upgrading to the current version (8.1.22) would prevent this from happening.

I see you've had similar issues regarding this here.

Anyone from IA want to weigh in on this one? @PGriffith ?