Change of Employee's business Unit from what was at the time of Corporate Card expense

Summary:

When employee incurred the corporate card expense then employee belonged to different Business Unit. But when statement was loaded the employee was transferred to new Business Unit. The Corporate Card setup for the new BU is disabled and hence the card transaction assigned to employee is getting invalid. User do not want to enable corporate card setups in the new BU but still want to knock off the expense lines. Is there any other way or enabling the corporate card expense setups in the New BU temporarily is the only way to make the transactions active.

Content (required):

When employee incurred the corporate card expense then employee belonged to different Business Unit. But when statement was loaded the employee was transferred to new Business Unit. The Corporate Card setup for the new BU is disabled and hence the card transaction assigned to employee is getting invalid. User do not want to enable corporate card setups in the new BU but still want to knock off the expense lines. Is there any other way or enabling the corporate card expense setups in the New BU temporarily is the only way to make the transactions active.