I'm not sure what is going on here.  The responses to my question seem like they were just pasted from a help file somewhere.  I still haven't seen a simple answer to my question, "why did this estimate automatically create an invoice when my customer accepted it?"  I've had estimates before that simply changed their state to Accepted and didn't create an invoice.  Nobody has been able to answer me that simple question.  All I want to know is - why did it happen and is there something I can do to change that behavior in the future?