I have developed context menu for enable multiple options on right click of Row selection. 

In Batch Mode : When I select multiple cell and right click to open context menu, selection disappear and only single cell is getting selected. I want to keep all the cell selected.

In Inline/Popup/Form : It working correct and getting all the rows selected on right click. I want to apply same behavior for Batch mode as well.

I have attached clip to show demostration