Index: src/org/eclipse/update/internal/configurator/SiteEntry.java
===================================================================
RCS file: /home/eclipse/org.eclipse.update.configurator/src/org/eclipse/update/internal/configurator/SiteEntry.java,v
retrieving revision 1.38
diff -u -r1.38 SiteEntry.java
--- src/org/eclipse/update/internal/configurator/SiteEntry.java	25 May 2005 15:23:46 -0000	1.38
+++ src/org/eclipse/update/internal/configurator/SiteEntry.java	30 May 2005 14:25:30 -0000
@@ -649,9 +649,11 @@
 
 		Element siteElement = doc.createElement(CFG_SITE);
 		
-		if (getURL() != null)
-			siteElement.setAttribute(CFG_URL, Utils.makeRelative(Utils.getInstallURL(), getURL()).toString());
-
+		if (getURL() != null) {
+			URL toPersist = (config == null || config.isTransient()) ? getURL() : Utils.makeRelative(Utils.getInstallURL(), getURL());
+			siteElement.setAttribute(CFG_URL, toPersist.toString());
+		}
+		
 		siteElement.setAttribute(CFG_ENABLED, isEnabled() ? "true" : "false"); //$NON-NLS-1$ //$NON-NLS-2$
 		siteElement.setAttribute(CFG_UPDATEABLE, isUpdateable() ? "true" : "false"); //$NON-NLS-1$ //$NON-NLS-2$
 		if (isExternallyLinkedSite())