refreshing rules README.md file

metadata/rules/README.md

@@ -990,7 +990,7 @@ For the MOD Imports Project into Noctua, it was proposed that group-specific ann
 ## Object extensions should conform to the extensions-patterns.yaml file in metadata
 
  * id: [GORULE:0000058](https://github.com/geneontology/go-site/blob/master/metadata/rules/gorule-0000058.md)
- * status: proposed
+ * status: implemented
 
 
 Rules are in the `extensions-constraints.yaml` file (https://github.com/geneontology/go-site/blob/master/metadata/extensions-constraints.yaml). This is
@@ -1002,6 +1002,8 @@ Extensions in annotations should conform to these constraints. If an element of
 disjunction in the extensions does not follow one of the constraints as listed in
 the above file, that element should be dropped from the extensions.
 
+Note that in the GO Central pipeline, this is only implmented upon imports of external annotations into Noctua.
+
 <a name="gorule0000059"/>
 
 ## GAF Version 2.0 and 2.1 are converted into GAF Version 2.2