Add 'skip' copy type to ERXCopyable to enable ignoring of attributes,…

… mostly to keep values that are applied during EO initialization.

Frameworks/Core/ERExtensions/Sources/er/extensions/eof/ERXCopyable.java

@@ -173,6 +173,13 @@ public interface ERXCopyable<T extends ERXCopyable<T>> extends ERXEnterpriseObje
 	 * @author David Avendasora
 	 */
 	public enum CopyType {
+
+		/**
+		 * Stored as " {@code ERXCopyable.CopyType = Skip;}" in the
+		 * property's UserInfo dictionary. Skips the value.
+		 * <em>For attributes only.</em>
+		 */
+		SKIP("Skip", new NSArray<Class<? extends EOProperty>>(EOAttribute.class, EORelationship.class)),
 
 		/**
 		 * Stored as " {@code ERXCopyable.CopyType = Nullify;}" in the
@@ -1334,6 +1341,9 @@ public static <T extends ERXCopyable<T>> void modelCopyAttribute(T source, T des
 			case NULLIFY:
 				destination.takeStoredValueForKey(null, attributeName);
 				break;
+			case SKIP:
+				// nothig to do
+				break;
 			default:
 				handleMissingOrInvalidCopyType(attribute, copyType);
 			}