"We all know books burn -- yet we have the greater knowledge that books cannot be killed by fire. People die, but books never die. No man and no force can abolish memory... In this war, we know books are weapons."
It wasn't a straightforward merge as they were at different levels - one Palmas del Mar was at city level and the other "one level down" at zone level. (Only zones at the same level can be merged eg cities with cities, zones with zones.)
I just needed to make sure that the Palmas del Mar name continued to exist in the correct spot when I merged zones!