The Practice Location field of a customer is not merged when using Customers - Information - Merge.
1. create customer 'A', with no Practice Location
2. create customer 'B', with a Practice Location 'X'
3. select customer 'A'
4. click Merge
5. select customer 'B' in the dialog 'Select the customer to merge with A'
6. On completion, customer 'A' should have Practice Location 'X', but it is left blank.
Note that if both customer A and customer B had a Practice Location set, customer A's location should remain unchanged.
When two customers A and B are merged, and the customer A has no Practice Location but customer B does, customer A should be assigned customer B's