Update ImportFolder_Change.cs

src/PixiEditor.ChangeableDocument/Changes/Structure/ImportFolder_Change.cs

@@ -188,7 +188,7 @@ internal class ImportFolder_Change : Change
     {
         foreach (var imageData in layerNode.KeyFrames)
         {
-            if (imageData.Data is ChunkyImage img)
+            if (imageData.Data is ChunkyImage img && (img.LatestSize.X < docSize.X || img.LatestSize.Y < docSize.Y))
             {
                 img.EnqueueResize(docSize);
                 img.CommitChanges();