I have refreshed my TEST system database from my DR box.
TEST consists of 2 linux servers TEST_NODE1 & TEST_NODE2 which are mirrored as PRIMARY failover and BACKUP failover
This is what I've done:
1. Remove TEST_NODE2 as Backup member using do ^MIRROR
2. Remove TEST_NODE1 mirror configuration using SMP (System Management Portal) GUI
3. Stop IRIS on TEST_NODE1 & TEST_NODE2
4. Copy files IRIS.DAT from DR to TEST_NODE1
5. Start IRIS on TEST_NODE1