diff --git a/src/org/labkey/test/components/domain/DomainFieldRow.java b/src/org/labkey/test/components/domain/DomainFieldRow.java
index 334cd67eed..d78be327e5 100644
--- a/src/org/labkey/test/components/domain/DomainFieldRow.java
+++ b/src/org/labkey/test/components/domain/DomainFieldRow.java
@@ -770,7 +770,7 @@ public DomainFieldRow clickRemoveOntologyConcept()
     public void setAllowMultipleSelections(Boolean allowMultipleSelections)
     {
         WebDriverWrapper.waitFor(() -> elementCache().allowMultipleSelectionsCheckbox.isDisplayed(),
-                "Allow Multiple Selections checkbox did not become visible", 2000);
+                "Allow Multiple Selections checkbox did not become visible", 1000);
         elementCache().allowMultipleSelectionsCheckbox.set(allowMultipleSelections);
     }
 
diff --git a/src/org/labkey/test/components/ui/grids/EditableGrid.java b/src/org/labkey/test/components/ui/grids/EditableGrid.java
index 937db346c2..6b1c20097d 100644
--- a/src/org/labkey/test/components/ui/grids/EditableGrid.java
+++ b/src/org/labkey/test/components/ui/grids/EditableGrid.java
@@ -56,6 +56,7 @@
 import static org.labkey.test.BaseWebDriverTest.WAIT_FOR_JAVASCRIPT;
 import static org.labkey.test.WebDriverWrapper.waitFor;
 import static org.labkey.test.util.TestLogger.log;
+import static org.labkey.test.util.data.TestArrayDataUtils.formatMultiValueText;
 import static org.labkey.test.util.selenium.ScrollUtils.Alignment.center;
 import static org.labkey.test.util.selenium.WebDriverUtils.MODIFIER_KEY;
 
@@ -921,6 +922,39 @@ public EditableGrid pasteMultipleCells(String pasteText, int startRowIndex, Char
         return this;
     }
 
+    /**
+     * Format data for pasting into an editable grid. List elements in each row are quoted and separated by commas.
+     * This allows values containing commas to be pasted into multi-value columns. Even single-selections for these
+     * types of columns should be passed in as Lists to ensure they are quoted properly.
+     *
+     * @param rows values for pasting into an editable grid.
+     * @return rows formatted for pasting into an editable grid.
+     */
+    public static String formatForPaste(List<List<?>> rows)
+    {
+        StringBuilder sb = new StringBuilder();
+        for (List<?> row : rows)
+        {
+            if (!sb.isEmpty())
+                sb.append("\n");
+
+            boolean firstVal = true;
+            for (Object value : row)
+            {
+                if (!firstVal)
+                    sb.append("\t");
+                else
+                    firstVal = false;
+
+                if (value instanceof List<?> l)
+                    sb.append(formatMultiValueText(l));
+                else
+                    sb.append(value);
+            }
+        }
+        return sb.toString();
+    }
+
     /**
      * Copies text from the grid, b
      * @param startRowIndex Index of the top-left cell's row
diff --git a/src/org/labkey/test/pages/assay/AssayRunsPage.java b/src/org/labkey/test/pages/assay/AssayRunsPage.java
index 48f679da12..a56716f543 100644
--- a/src/org/labkey/test/pages/assay/AssayRunsPage.java
+++ b/src/org/labkey/test/pages/assay/AssayRunsPage.java
@@ -113,6 +113,13 @@ public void clickEditAssayDesign()
         elementCache().manageMenu.doMenuAction("Edit Assay Design");
     }
 
+    //Method for Standard assays only.
+    public AssayImportPage clickImportData()
+    {
+        clickAndWait(Locator.linkWithText("Import Data"));
+        return new AssayImportPage(getDriver());
+    }
+
     @Override
     protected ElementCache newElementCache()
     {
diff --git a/src/org/labkey/test/util/data/TestArrayDataUtils.java b/src/org/labkey/test/util/data/TestArrayDataUtils.java
index e878d2e790..7509828bdb 100644
--- a/src/org/labkey/test/util/data/TestArrayDataUtils.java
+++ b/src/org/labkey/test/util/data/TestArrayDataUtils.java
@@ -45,19 +45,35 @@ public static <T> Map<String, List<String>> filterMap(Map<String, T> map, List<S
                 .filter(entry -> isMatch(entry.getValue(), searchValues, filterType))
                 .collect(Collectors.toMap(
                         Map.Entry::getKey,
-                        e -> e.getValue().stream()
-                                // Standard alphabetical sort that accounts for symbols and numbers.
-                                // But uppercase letters are positioned before lowercase letters.
-                                .sorted(Comparator
-                                        .comparing((String s) -> s.substring(0, 1).toLowerCase())
-                                        .thenComparing(s -> s.substring(0, 1))
-                                        .thenComparing(s -> s))
-                                .collect(Collectors.toList()),
+                        e -> sortValues(e.getValue()),
                         (e1, e2) -> e1,
                         LinkedHashMap::new
                 ));
     }
 
+    /**
+     * Standard alphabetical sort that accounts for symbols and numbers.
+     * Uppercase letters are positioned before lowercase letters.
+     */
+    public static List<String> sortValues(List<String> values)
+    {
+        return values.stream()
+                .peek(s -> { if (s.isEmpty()) throw new IllegalArgumentException("Empty values aren't allowed: " + values);})
+                .sorted(Comparator
+                        .comparing((String s) -> s.substring(0, 1).toLowerCase())
+                        .thenComparing(s -> s.substring(0, 1))
+                        .thenComparing(s -> s))
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * Sorts values alphabetically and joins them with the given separator.
+     */
+    public static String sortAndJoin(List<String> values, String separator)
+    {
+        return String.join(separator, sortValues(values));
+    }
+
     public static Map<String, String> prepareMapForCheck(Map<String, List<String>> map)
     {
         return map.entrySet().stream()
@@ -87,6 +103,11 @@ public static List<String> parseMultiValueText(String multiValueString) throws I
         }
     }
 
+    public static <T> String formatMultiValueText(List<T> values)
+    {
+        return values.stream().map(CSVFormat.DEFAULT::format).collect(Collectors.joining(","));
+    }
+
     private static boolean isMatch(List<String> actualValues, List<String> searchValues, Filter.Operator type)
     {
         return switch (type)