Exact same issue!  My client wants a weekly invoice, NOT MULTIPLE emails to fill their inbox.  I own a concierge service and handle multiple clients each day.  The same client may have six hours on Monday and only three hours on Thursday; therefore, on Friday I need to bill for the whole week.  

I tried to update the invoice that was created from my time entries, but it created a separate invoice...now she has two invoices (one for the original time and the correct one).  I have tried to delete the original invoice, but just receive a spinning green circle. Anyone else having this issue?

Sadly, I AM NOT IMPRESSED with the "Experts"!