I have a working Create Exchange Item activity on a workflow that runs after a form submission.  It fills in a name for BOOKING for rentals.

I now have discovered a need to UPDATE the bookings as a user wants the bookings marked on the calendar whether a deposit was paid yet or not, then update the calendar to say Paid once it was confirmed as paid.  She could then look at the calendar and determine whether or not a first person has paid his deposit if a second person is asking for that spot.  If so, she can let the second person know that date is out, but if the first person did not pay yet, she can contact them and encourage them to pay or let the spot go to the second person.

I am now attempting the UPDATE Exchange Item config (copied the original wf) and found the UPDATE activity requires connection information for "Item to Update" that I couldn't make available to the activity unless the CREATE Exchange Item was still there.

QUESTION:  I don't want the booking created twice, which it seems to me will happen if I run this wf this way.  Is there a way to have the CREATE booking activity there for the UPDATE activity to reference which booking to change but not have a second booking created?  Or am I doing this all wrong?  Does someone have an example of this that I can copy their set up from?