It is really important to me that the annual memberships I'm selling fall due at the start of the financial year, 1st July where I live.  I realise I can set up a Future plan starting next year but I'm looking for a convenient way of billing immediately for the period between sign-up and 1st July. If I set up an annual recurring plan with a start date in the past will the system raise a pro-rata invoice or do I have to invent some other way of billing for whatever period exists between sign-up and the next 1st July.