diff --git a/base/uk.ac.stfc.isis.ibex.configserver/src/uk/ac/stfc/isis/ibex/configserver/configuration/Configuration.java b/base/uk.ac.stfc.isis.ibex.configserver/src/uk/ac/stfc/isis/ibex/configserver/configuration/Configuration.java
index 539e74c0f1..8abc8e1923 100644
--- a/base/uk.ac.stfc.isis.ibex.configserver/src/uk/ac/stfc/isis/ibex/configserver/configuration/Configuration.java
+++ b/base/uk.ac.stfc.isis.ibex.configserver/src/uk/ac/stfc/isis/ibex/configserver/configuration/Configuration.java
@@ -134,6 +134,7 @@ public Configuration(Configuration other) {
 				other.getComponents(), other.getHistory(), other.isProtected, other.isDynamic,
 				other.configuresBlockGWAndArchiver, other.getGlobalmacros());
 		this.pv = other.pv;
+		this.iocs.forEach(ioc -> ioc.getMacros().forEach(macro -> macro.setUseDefault(false)));
 	}
 
 	/**