. What Happens when You Post to Year 2006 when You are inv 2007?

First of all, to post a document relating to a previous year, say 2006 when you are in 2007, the relevant posting period should be open in the system. When such a posting is done, the system makes some adjustments in the background:

One: the carry-forward balances of the current year, already done, are updated in case the posting affects balance sheet items.

Two: if the posting is going to affect the Profit & Loss accounts, then the system adjusts the carried forward profit or loss balances to the Retained Earnings account(s).