GL Period in Clearing Transaction window vs Available Transactions window

Gurus,

Can some one review the below scenario and let me know if this intended functionality ??

I am kind of stumped on how this is happening ??

OU 1:

1. BAI files are imported into CE module.

2. Auto Reconciliation program is then run. If there are no matching records - lines wont Reconcile.

3. Users manually reconcile the Unreconciled lines.

4. They select the line and click on Available button. In Available Transactions window, we are not able to update the GL Date field. We get "period close message". This is ok - since the periods are already closed and system is expecting us to record transactions in open period.