previous purchase requisitions raised before enabling the budgetary control

Summary:

Will the previous purchase requisitions amount gets reserved against the allocated budget for the code combination

Content (please ensure you mask any confidential information):

We are enabling budgetary control and encumbrance accounting one month after starting a new Business Unit (BU). We already have budgetary control at the Purchase Requisition (PR) level in other BUs, and we want to implement the same for this new BU. Previously, we raised multiple purchase requisitions. The question now is whether the amounts for these existing purchase requisitions will be reserved against the allocated balances in New BU.

Version (include the version you are using, if applicable):