Please be informed that you can find the information about dividend adjustments in your MetaTrader.
In order to do it, please follow some steps below:
Click the "History" tab on the Instruments panel.
Right-click on the History panel and select "Positions".
Right-click again and select "Custom Period" to set the necessary period.
The dividend adjustment amount will be displayed in the "Profit" column.
Moreover, you can see the information about the dividend adjustments in a trading statement. To download the statement, please right-click on the History tab and select "Report" -> "Open XML (MS Office Excel 2007 / HTML (Internet Explorer))".
Once the trading statement is opened, you will see the information about dividend adjustments in the "Deals" section.