Annuity Billing - Activation Date

Good day, 

I would just like some insight on the Annuity Billing module. 

We are currently in the process of converting a Partner Database to Sage 200 Evolution.

This partner database had Scheduled invoices. 

When trying to bring these scheduled invoices into Annuity Billing, we need to keep the original Activation date as per Partner.

By doing this, if for example the Activation date was April 2019, Evolution is now going to process from that date to current.

I need that Charges Due to show 1.

Is this possible? 

Thank you