So today I was working on a widget Accept / Reject
Solution. I found a share (link defunct)
that looked like it would meet all of my needs. It looked great, until I
tried rejecting a custom extended task table.

I couldn't easily set it to work so I backed it out and determined I'd
just roll my own, however that share updated a existing sp_instance.
After I backed out the update set that sp_instance record was still
there. I couldn't get it to fall off the page regardless what I tried;

• Record didn't exist at this point so couldn't delete it.
• Recreated empty table, and inserted the record with the referenced
  sys_id via setNewGuidValue. At
  this point I could set Active to false, but I wanted it gone.
• Tried Deleting the record from the column record, but it would only
  ever delete the actual record on it's table and not from the related
  list of sp_instances.

I ended up making a new column, moving all widgets over, then deleted
the old column.