In a Revenue Update Batch, users have the option to change which Revenue is being updated, and make changes to the Revenue itself. When changing to a new Revenue and adjusting the amount, users are asked if they would like to update the Recognition Amount. Even after selecting Yes, the Recognition Amount on the Revenue record still shows the old amount.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.