diff --git a/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXPrefixQualifierTraversal.java b/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXPrefixQualifierTraversal.java
index e892d3a3c44..62d2e3ffcb0 100644
--- a/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXPrefixQualifierTraversal.java
+++ b/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXPrefixQualifierTraversal.java
@@ -11,6 +11,7 @@
 import com.webobjects.foundation.NSRange;
 
 import er.extensions.eof.ERXKey;
+import er.extensions.eof.qualifiers.ERXExistsQualifier;
 
 /**
  * Takes a qualifier, traverses every subqualifier, and prepends every keypath
@@ -110,6 +111,13 @@ protected boolean traverseTrueQualifier(ERXTrueQualifier q) {
 		return true;
 	}
 
+	@Override
+	protected boolean traverseExistsQualifier(ERXExistsQualifier q) {
+		String newBaseKeyPath = q.baseKeyPath() != null ? _prefix + q.baseKeyPath() : _prefix.substring(0, _prefix.length() - 1);
+		_qualifiers.add(new ERXExistsQualifier(q.subqualifier(), newBaseKeyPath, q.usesInQualInstead()));
+		return true;
+	}
+
 	@Override
 	public synchronized void traverse(EOQualifierEvaluation q, boolean postOrder) {
 		if (!postOrder) {
diff --git a/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXQualifierTraversal.java b/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXQualifierTraversal.java
index 25e60bb143e..8d32a2a3b6d 100644
--- a/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXQualifierTraversal.java
+++ b/Frameworks/Core/ERExtensions/Sources/er/extensions/qualifiers/ERXQualifierTraversal.java
@@ -17,6 +17,8 @@
 import com.webobjects.eocontrol.EOOrQualifier;
 import com.webobjects.eocontrol.EOQualifierEvaluation;
 
+import er.extensions.eof.qualifiers.ERXExistsQualifier;
+
 /**
  * Traverse a network of qualifiers until a traversal method returns false.
  * Subclass and implement the methods you need.
@@ -125,6 +127,17 @@ protected boolean traverseFalseQualifier(ERXFalseQualifier q) {
 		return true;
 	}
 
+	/**
+	 * Should traverse exists qualifier?
+	 *
+	 * @param q
+	 *            the qualifier to process
+	 * @return should traverse exists qualifier
+	 */
+	protected boolean traverseExistsQualifier(ERXExistsQualifier q) {
+		return true;
+	}
+
 	/**
 	 * Traverses the supplied qualifier
 	 * 
@@ -199,6 +212,9 @@ else if (q instanceof ERXTrueQualifier) {
 			else if (q instanceof ERXFalseQualifier) {
 				result = traverseFalseQualifier((ERXFalseQualifier) q) ? Boolean.TRUE : Boolean.FALSE;
 			}
+			else if (q instanceof ERXExistsQualifier) {
+				result = traverseExistsQualifier((ERXExistsQualifier) q) ? Boolean.TRUE : Boolean.FALSE;
+			}
 			else {
 				result = traverseUnknownQualifier(q) ? Boolean.TRUE : Boolean.FALSE;
 			}