I am struggling to understand the new method of deleting time or unlinking time from an invoice.  I used to be able to unlink the time and it would show as converted under the customer but I could still see the past time entry.  Now, with the new invoice format, if I delete the added line, it just places it back on the list on the right side of the screen and does not unlink the time, the time entry remain open under the customer and will show up in the future.  What was wrong with the old method?