Sounds like deletion of a paid invoice.   When you run your aged A/P report, it should show which company it's for in the unpaid balance, and the detail in the detailed balance 'as of' a date slightly in the future.

The unapplied balance should appear in the Payments window for that supplier.  You can't automatically reverse it, but you can apply it, or post a negative amount as a cash payment against it. 

Are you able to pull the Prepaid Expenses General ledger account and look for it there, then double click on that entry?

I can't seem to access the GL!

On the main window at top select 'Reports' then scroll down and select 'Financials' then move over and select 'General Ledger...', there you will be able to select the Fiscal Year, the Start and Finish dates, and then hilite the prepaid general ledger, then sort by transaction nbr or by date.

If that doesn't help then still do above but instead of selecting 'General Ledger...' click on 'Trial Balance' then enter your Fiscal Year and date.

so it appears as a payment under vendor aged detail ?

but when you double click the payment, it doesn't open the payment journal ? do you get a message ?

oops - then look for your prepaid expense account nbr and double click on that - it should bring up the full years worth of transactions.

I can see the transaction on my detail list but when I tried to look it up on the search it would not pull it up. It has something to do with the session date. I am going to fix it another way and leave historical mode. This was not a payment to a vendor, it was just done as a JE but I cannot reverse it because it is AP. Thanks for your help.

If you see the transaction on your detail list then double  click on the JE nbr - that should bring up the transaction. Now if it does have the A/P nbr listed and it was done as a JE then likely your data integrity is compromised. In the main window up top click on Maintenance, the down to 'Check Data Integrity...' Another box pops up and at bottom it should say Data OK - if it says data inconsistencies then check the upper portion to find out what is out of balance - the left side should match the right side for each line but one or more of them will be out.