MYOB autonumbering of Banking reciepts recieve money and sales recieve payment

Hi Support,

I am getting this problem where by i am trying to overwrite the autonumber of reciept from Banking module but upon manually using CR number and saving the reciept it will go back to default reciept number ie CR000001

I have tried multiple times and saved  multiple manually reciept numbers but then when i try and create new reciept it will still give default receipt number the reciept number wouldnt update. 

I am facing the same problem when recording customer payments using recieve payments under sales module.

Using MYOB 2014.4 nz version.

Please advise urgently how this can  be resolved because it is getting fustrating and time consuming to go back and trace the last reciept number and enter it manually.

Appreciate your assistance.

thanks

Pranit