How to Close Existing Opened SLA Periods while GL Periods are already Closed.

Hi,

I want to know what is standard practice to close SLA Periods of Fiscal Year while GL Periods are already closed.

For Example: Invoice Validation > AP Accounting Period "Closed" > Clear Period Close Exceptions Report (XML) > Create Accounting > Transfer to GL, it is a standard process.

Is there any other possible scenario to close all previous SLA Periods (AP, AR, Purchasing) without impacting GL Period/Data?

Please guide.