Opening a Deleted Chart on MetaTrader 4
On the MT4 Software when trading if you get to delete a chart or open one that has been deleted unintentionally, you can use option of 'Open Deleted' located on file dropdown menu as the third option on this list.
For examples if you had opened a EURUSD and had put a set of indicators on this chart, but you had not saved this set of indicators, then you can just use this option to open the charts named EURUSD, note there might be 2 or 3 or more of the deleted EURUSD on the list and you will have to open each until you get the one that you are looking for. Like the example below there are 2 EURUSD deleted charts.
For examples by clicking open the deleted chart of EURUSD will open this deleted chart that had been closed previously.
Procedure of opening a deleted chart from the MT4 'File' Drop down navigation menu.
If you have deleted many charts this list will include all of these charts and they will be ordered from the most recent onwards, & as a trader you might have to scroll either up or down in case there are many deleted ones saved within this option.