Should I implement iNovah before or after changing customer information systems or accounting systems?

The benefits provided by iNovah can be realized immediately by integrating it with existing customer information systems and accounting systems.  When a system changes, a new interface is developed and implemented at the appropriate time.  Having iNovah installed when a new system is implemented can provide extra transition benefits such as the ability to update both systems simultaneously, the ability to research a detailed payment database when the old system is phased out, and the ability to inquire to one system and update another