I for one notify the person whom I'm sending the centre on to that it is on its way - I also ask them to notify me when they receive it which Steph always does & also notify the person Patti who has sent the next centre onto me which needs working on that it has arrived safely too.
Haven't seen my centre for a while too, however I do know that Elle very kindly said she would put in an additional round onto mine as it was one round short !!
Tisha