JAL-2482 JAL-2487 documented in release notes

diff --git a/help/html/releases.html b/help/html/releases.html
index 54740d6..ed43c17 100755 (executable)
--- a/help/html/releases.html
+++ b/help/html/releases.html
@@ -564,9 +564,11 @@ li:before {
               proteins
             </li>
             <li>
-              <!-- JAL-2482 -->Incorrect PDB-Uniprot mappings created
-              from SIFTs for April 2017 update due to 'null' strings in
-              RESNUM mapping field
+              <!-- JAL-2482, JAL-2487 -->Incorrect PDB-Uniprot mappings
+              created from SIFTs, and spurious 'Couldn't open structure
+              in Chimera' errors raised after April 2017 update (problem
+              due to 'null' string rather than empty string used for
+              residues with no corresponding PDB mapping).
             </li>