Transactions have been moved to History and the Ledger Settings (File, Company Settings, GL Settings, Ledger Settings) are looking only at the Current file.

Change the Ledger settings in GL to view both Current & History files:

1. In General Ledger, select File, Company Settings, GL Settings.
2. Click Ledger Settings.
3. Change both the Tran files for current ledger and Trans files for YTD ledger to use Current and history.
4. Click OK to exit Ledger Settings.
5. Click OK to exit GL Settings.
6. Verify the the !! no longer appear on the Current or YTD ledger.

If this is not your issue, refer to article 105554 DocLink: Double exclamation marks (!!) appear on the Current Ledger or Year-to-date Ledger in General Ledger (MASTER ARTICLE) for other possible causes and solutions.