I have a customer where re - pre-auth CC  is showing  as 0.00 on receipt batch

I suspect this is because original pre-auth was expired

the flow is

1. make an order

2. pre-auth CC

3. change the order by adding to it

4. wants to pre-auth again for new larger order total

I assume you have to void the first pre-auth and then you can pre-auth the 2nd time

is this correct ?

thanks