I took over bookkeeping from the company's previous bookkeeper, and am struggling with cleanup in some areas.

Many of our employees have contributed pre-tax dollars to their 401k's over the years. For many years, the employees' contributions were correctly withheld from their paychecks and credited to a liability account (aside: the account was a general "Payroll Liabilities" account that was also used for FICA payroll withholdings, and should have been more specific to employee benefits). However, when the contributions were provided to the 401k administrating company, the same liability account was not debited to return the liability to $0. Instead, the transactions were recorded against an expense account called "Retirement Acct Contributions". Therefore, our "Payroll Liabilities" liability account gradually increased over time - 6 years - to where it is today at about $130,000.

I'd like to clear this liability from our balance sheet, but I'm not sure how to correctly do it. I know that I can fix each individual transaction, but that's impractical for 6 years of contributions. I'd settle for a journal entry, but again, I'm not sure what to credit and debit.

Thanks very much!