Commit 2c1021b8a for imagemagick.org

commit 2c1021b8a44c282e3da06754ed6985b43d33c244
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Sun Oct 11 07:07:59 2026 -0400

    https://github.com/ImageMagick/ImageMagick/issues/9011

diff --git a/MagickWand/mogrify.c b/MagickWand/mogrify.c
index 34ba7f26f..96ad00430 100644
--- a/MagickWand/mogrify.c
+++ b/MagickWand/mogrify.c
@@ -3952,8 +3952,9 @@ WandExport MagickBooleanType MogrifyImageCommand(ImageInfo *image_info,
           Image *clone_image = CloneImageList(image,exception);
           if (clone_image != (Image *) NULL)
             {
-              (void) CopyMagickString(clone_image->magick,image_info->magick,
-                MaxTextExtent);
+              if (*clone_image->magick == '\0')
+                (void) CopyMagickString(clone_image->magick,image_info->magick,
+                  MaxTextExtent);
               status&=(MagickStatusType) WriteImages(image_info,clone_image,
                 (*backup_filename != '\0') ? backup_filename :
                 clone_image->filename,exception);