diff --git a/src/org/labkey/test/components/ui/entities/EntityBulkUpdateDialog.java b/src/org/labkey/test/components/ui/entities/EntityBulkUpdateDialog.java
index 7c9309caba..c4fc7ed4e5 100644
--- a/src/org/labkey/test/components/ui/entities/EntityBulkUpdateDialog.java
+++ b/src/org/labkey/test/components/ui/entities/EntityBulkUpdateDialog.java
@@ -16,6 +16,7 @@
 import org.labkey.test.components.react.FilteringReactSelect;
 import org.labkey.test.components.react.ReactDateTimePicker;
 import org.labkey.test.components.react.ToggleButton;
+import org.labkey.test.components.ui.files.AttachmentCard;
 import org.labkey.test.components.ui.files.FileAttachmentContainer;
 import org.labkey.test.components.ui.files.FileUploadField;
 import org.labkey.test.params.FieldDefinition;
@@ -294,6 +295,24 @@ public EntityBulkUpdateDialog removeFile(CharSequence fieldIdentifier)
         return this;
     }
 
+    /**
+     * Removes an existing attachment displayed as an {@link AttachmentCard} in the bulk update dialog.
+     * This is used when the rows being edited already have an attachment — the existing file is shown
+     * as an AttachmentCard with a dropdown menu containing "Remove attachment".
+     *
+     * @param fieldIdentifier Identifier for the field; name ({@link String}) or fieldKey ({@link FieldKey})
+     * @return this component
+     */
+    public EntityBulkUpdateDialog removeExistingAttachment(CharSequence fieldIdentifier)
+    {
+        var row = getFileField(fieldIdentifier);
+        // setEditableState(fieldIdentifier, true);
+        // WebElement row = elementCache().formRow(fieldIdentifier);
+        AttachmentCard card = new AttachmentCard.FileAttachmentCardFinder(getDriver()).waitFor(row);
+        card.clickRemove();
+        return this;
+    }
+
     public FileUploadField getExistingFileCard(CharSequence fieldIdentifier)
     {
         FieldKey identifier = FileAttachmentContainer.fileUploadFieldKey(fieldIdentifier);