diff --git a/webapp/views/data_tables/templates/clone_attributes_4.html b/webapp/views/data_tables/templates/clone_attributes_4.html
index 4f4b7f9a..6f9f4203 100644
--- a/webapp/views/data_tables/templates/clone_attributes_4.html
+++ b/webapp/views/data_tables/templates/clone_attributes_4.html
@@ -40,9 +40,14 @@
         function select_default(_select_id) {
             // We need to replace spaces with underscores in the SELECT id for jQuery to work properly
             let select_id = _select_id.replace(/ /g, '_');
-            let selector = '#' + select_id + ' option';
             // Get rid of SELECT__ and __SELECT substrings
             let default_val = select_id.substring(8, select_id.length - 8);
+            // jQuery interprets '.' as a class selector, so we need to escape '.' with '\\'
+            // It's a double backslash because the first backslash is an escape character in a string. I.e., we're
+            //  saying we want the backslash to go into the string, not be interpreted as an escape character.
+            //  Now the selector will correctly find the option with the value that has a period in it.
+            select_id = select_id.replace(/\./g, '\\.');
+            let selector = '#' + select_id + ' option';
             $(selector).filter(function() {
                 let this_text = $(this).text().replace(/ /g, '_');
                 return this_text === default_val;