Kindly find the actions and Target sheet I updated
1) Instead of applying action on All fields , i applied on Selected Fields --> select Region fields in the source and Target.
2) Duplicated the region filter to exclude other
Let me know if it helps so that i will remove this workbook (Workbook is developed in 2018.1)
Marks as Correct/helpful if it helps you so that it will help others as well
Thanks for your help, yes this definitely helped!