Cash Management - re-opening a cash drawer after you have eneded it

[simon_lyttelton]

Hi. 
I have a little problem. 
I counted the cash after saturdays sales and I thought I was £40 down so I enetered what i thought i had. 

Later, one of my maagers came up to me and said that only 50% of the float was put into the till. however, this wasn't altered when then drawer was started. 

So, is there a way for me to go back and edit this? I can't find it if there is a way. 

Thank you!