Expenditure Item Date

Hi

I have an issue with the expenditure item date concept and below are the details:

Instance: 11.5.10

We created a PO in 01-Dec-2013 and entered all the details like Project, Task, and Expenditure Item Date.

We matched the PO to an Invoice in 22-Jan-2014 (Dec-13 period was closed) and in the Invoice Distributions, we could see the past expenditure date as 01-Dec-2013. However we can change the expenditure item date in the invoice workbench.

But is there any way / profile option which will drive how the AP invoice picks up the expenditure item date. Supposedly defaulted to the current open PA period.