Bentley Substation Device Properties

Good day. I am currently using Substation V8i V08.11.13.140.

I have to change the Location in in the Device Properties of a very large substation into different Feeders, Bays that has over 8000 etc.

How can I do this by multiple selection. At this stage I am doing it symbol for symbol and with a substation that has over 8000 symbols this will take longer than to do the complete layout.

Please help.