diff --git a/Tests/test_image_convert.py b/Tests/test_image_convert.py
index f57d83dac1a..eee5127a845 100644
--- a/Tests/test_image_convert.py
+++ b/Tests/test_image_convert.py
@@ -290,6 +290,18 @@ def test_p2pa_palette() -> None:
     assert im_pa.getpalette() == im.getpalette()
 
 
+def test_pa2p_palette() -> None:
+    im_pa = Image.frombytes("PA", (2, 1), bytes([0, 255, 1, 255]))
+    im_pa.putpalette(bytes([255, 0, 0, 7, 0, 255, 0, 9]), "RGBA")
+
+    im_pa.putalpha(Image.frombytes("L", (2, 1), bytes([240, 220])))
+    assert im_pa.get_flattened_data() == ((0, 240), (1, 220))  # Matches the alpha band
+
+    im_p = im_pa.convert("P")
+    assert im_p.im.getpalettemode() == "RGB"
+    assert im_p.im.getpalette("RGB") == bytes([255, 0, 0, 0, 255, 0])
+
+
 rgb2xyz_matrix = (
     0.412453, 0.357580, 0.180423, 0,
     0.212671, 0.715160, 0.072169, 0,
diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index ddbaec20a05..1c1f5af0f01 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -1242,9 +1242,8 @@ def convert_transparency(
 
         new_im = self._new(im)
         if mode in ("P", "PA") and palette != Palette.ADAPTIVE:
-            from . import ImagePalette
-
-            new_im.palette = ImagePalette.ImagePalette("RGB", im.getpalette("RGB"))
+            # Install the original image's palette into the new copy
+            new_im.putpalette(im.getpalette("RGB"))
         if delete_trns:
             # crash fail if we leave a bytes transparency in an rgb/l mode.
             del new_im.info["transparency"]