Karre,

It is possible a Journal Entry was made into the Pension liability account from the GL in error as well. Check for any entries in the detail listing that are not coming from either PayDirt or AP (assuming you are paying your Pension provider from AP). Check the individual months pension amounts in the GL versus PayDirt to see if the discrepancy occurred in a single month. When was the last time you can confirm the balances between PayDirt and the GL were in balance?