You can export orders assigned to a specific folder via the Open Orders Export functionality.
In the column mapping step, you need to select the Additional Columns > Order folder option.
Then specify the column name as you would like it to appear in the file and select the folder from the dropdown:
Please note! The Folder Name column doesn't support filtering. It only enables you to choose which folder names are displayed in the file with exported open orders.
In our case, all orders assigned to the Awaiting Fulfilment Stock folder will have an entry with this name in the column Folder. For those orders that are not assigned to this folder, entries in this column will be blank. You can filter out orders assigned to a specific folder further in the exported CSV file.
You can check columns that support filtering in the Open Orders export on the following link.