diff --git a/pom.xml b/pom.xml
index e76420fa..1494087d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.pamguard</groupId>
   <artifactId>Pamguard</artifactId>
-  <version>2.02.09b</version>
+  <version>2.02.09c</version>
   <name>Pamguard Java12+</name>
   <description>Pamguard for Java 12+, using Maven to control dependcies</description>
 	<url>www.pamguard.org</url>
diff --git a/src/PamController/PamguardVersionInfo.java b/src/PamController/PamguardVersionInfo.java
index a5d16d78..7172293c 100644
--- a/src/PamController/PamguardVersionInfo.java
+++ b/src/PamController/PamguardVersionInfo.java
@@ -31,12 +31,12 @@ public class PamguardVersionInfo {
 	 * Version number, major version.minorversion.sub-release.
 	 * Note: can't go higher than sub-release 'f'
 	 */
-	static public final String version = "2.02.09b";
+	static public final String version = "2.02.09c";
 	
 	/**
 	 * Release date
 	 */
-	static public final String date = "29 June 2023";
+	static public final String date = "10 November 2023";
 	
 //	/**
 //	 * Release type - Beta or Core
diff --git a/src/bearinglocaliser/offline/BLOfflineTask.java b/src/bearinglocaliser/offline/BLOfflineTask.java
index 3f98c031..3fcde7c1 100644
--- a/src/bearinglocaliser/offline/BLOfflineTask.java
+++ b/src/bearinglocaliser/offline/BLOfflineTask.java
@@ -22,6 +22,7 @@ public class BLOfflineTask extends OfflineTask {
 		this.bearingLocaliserControl = bearingLocaliserControl;
 		bearingProcess = bearingLocaliserControl.getBearingProcess();
 		this.addRequiredDataBlock(rawOrFFTBlock = bearingProcess.getParentDataBlock());
+		addAffectedDataBlock(detectionBlock);
 //		PamDataBlock detectionSource = bearingLocaliserControl.getDetectionMonitor().getParentDataBlock();
 //		this.setParentDataBlock(detectionSource);
 //		setParentDataBlock(bearingProcess.getParentDataBlock());
diff --git a/src/group3dlocaliser/offline/Group3DOfflineTask.java b/src/group3dlocaliser/offline/Group3DOfflineTask.java
index 0a9a8e94..000f022f 100644
--- a/src/group3dlocaliser/offline/Group3DOfflineTask.java
+++ b/src/group3dlocaliser/offline/Group3DOfflineTask.java
@@ -26,6 +26,10 @@ public class Group3DOfflineTask extends OfflineTask<PamDataUnit>{
 		this.group3DControl = group3DControl;
 		group3DProcess = group3DControl.getGroup3dProcess();
 		addAffectedDataBlock(group3DProcess.getGroup3dDataBlock());
+		PamDataBlock parentData = group3DProcess.getParentDataBlock();
+		if (parentData != null) {
+			this.addRequiredDataBlock(parentData);
+		}
 	}
 
 	@Override