Restrict transfer of expenses to AP

Hi ALL,

We had implemented only Expenses for one of our Business Units in Phase-1, without enabling Accounts Payable (AP). As a result, we did not transfer any expenses to AP for that BU.

Now, in Phase-2, we are implementing AP for the same Business Unit. However, we do not want to transfer the earlier expenses (from Phase-1) to AP.

Is there a way to prevent those historical expenses from being picked up or transferred to AP during the Phase-2 implementation?

Any insights or suggestions would be appreciated.

Thanks!