Handling pre-authorizations in SAGE 100 2017. Which field is analogous to CreditCardPreAuthorizationAmt field in SAGE 2014?

We have an in-house built application that pre-authorizes a credit cards with external CC processor and updates SO_SalesOrder_bus with CreditCardAuthorizationNo$, CreditCardTransactionID$ and also sets CreditCardPreAuthorizationAmt.

We have recently upgraded to SAGE 100 2017 and the application gives us an error that CreditCardPreAuthorizationAmt column is not found.

In new version of SAGE I use SO_SalesOrder'PaymentObj instead of SO_SalesOrder to save payment information about order. But I cannot find a field called 'CreditCardPreAuthorizationAmt' neither in SO_SalesOrder'PaymentObj nor in SO_SalesOrder.

What is the proper way of updating order with pre-authorization amount in SAGE 100 2017? I found a field named the TransactionAmt field on SO_SalesOrder'PaymentObj. Would it be OK to change program to set this field (TransactionAmt) field instead of CreditCardPreAuthorizationAmt?

Thanks a lot,

Boris