diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index f512f9fc38..d100911bce 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -1229,8 +1229,10 @@ Zotero.Utilities.Internal = {
 			if (!key
 					|| key != 'type'
 					|| skipKeys.has(key)
-					// Ignore 'type: note' and 'type: attachment'
-					|| ['note', 'attachment'].includes(value)) {
+					// 1) Ignore 'type: note' and 'type: attachment'
+					// 2) Ignore 'article' until we have a Preprint item type
+					//    (https://github.com/zotero/translators/pull/2248#discussion_r546428184)
+					|| ['note', 'attachment', 'article'].includes(value)) {
 				return true;
 			}
 			
diff --git a/test/tests/itemTest.js b/test/tests/itemTest.js
index 650da004c7..a6d29c1883 100644
--- a/test/tests/itemTest.js
+++ b/test/tests/itemTest.js
@@ -1896,6 +1896,17 @@ describe("Zotero.Item", function () {
 			assert.equal(item.getField('extra'), 'Pages: 123');
 		});
 		
+		it("shouldn't convert 'Type: article' from Extra into Document item", function () {
+			var json = {
+				itemType: "report",
+				extra: "Type: article"
+			};
+			var item = new Zotero.Item;
+			item.fromJSON(json);
+			assert.equal(Zotero.ItemTypes.getName(item.itemTypeID), 'report');
+			assert.equal(item.getField('extra'), 'Type: article');
+		});
+		
 		it("should ignore creator field in Extra", async function () {
 			var json = {
 				itemType: "journalArticle",