Sir from manual to computerised

Sridevi Arunkumar (62 Points)

03 September 2017  
Sir we are in to job work and we are registered we use to give manual receipt voucher including taxes to the
the primary owners .
now we are moving to computerised where we have to give delivery challan and tax invoice for service . should we continue with the same voucher number that we were using during themanual procedure r should we startthe invoice no from beginning.