Merging rules for Multi Select-Address

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Hi Team,

Need your help to understand merging rules for the Extension field(Multi-Select) available in Address Object.

We have a case where extension is created via Custom object as multi-select in Address.

At Merge, the system should merge this field as well & should select all values available in this field.

Example:

Customer ABC - Custom filed Value - 123ABC

Customer ABC1 - Custom Field valve - 456XYZ

After Merge:

Customer ABC - Custom Field - 123ABC & 456XYZ

Is there any standard way or Groovy way to update the field after Merge?

Regards,

Mayank Pande

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