what is the Process of Merge Many Groups into one Group in a Destination Group

Could you please share the process of merge from the Source Domain Many Groups to one Group in the Destination Group

Example we have different scope of Groups in Source domain

1) Group1 - Domain Location 

2) Group2 - Global Group

From the Source Domain with that 2 Groups merge with One Global Group in Destination Group

Scope Source Domain Target Domain Scope
Domain Local Group1 Group-ALL Global Group
Global Group Group2

we tried in my own Test  LAB, but the results is wired output

Kindly help us for the request.