Thank you Edy and Thank you Ankit.
Both of you helped us in two different ways.
By providing B1DE link Ankit solved our problem for the time being (Yet to recompile the add-on in new DE)
By giving a correct explanation on how to work on B1 studio, Edy helped us on deciding the future course of action.
Both replies marked as helpful
Thank you once again and Happy new year to all!!!!