Best practice using Main Business Credit Card vs. Employee Credit Cards in Netsuite

We are relatively new to the Netsuite (moved from QB), and the process of managing Main Business Credit Card account vs. subaccounts for individual Employees seems to be confusing in sense of reconsiliation and especially the process of paying off the credit card bill.

What we had before in QB: whenever we would pay off Main Credit Card bill we would also create an expense report which would off set (lower) employee individual credit card balances as well.

What we observe now in Netsuite: from month to month as our employees incur expenses and make expense reports, their employees credit cards balances continuously grow, while Main Business CC balance continuously declines (as we use it pay Credit Company bill). Is it the right thing to happen or are we missing something?