diff --git a/Annex/Import.hs b/Annex/Import.hs
index cda82022a9..6a71538563 100644
--- a/Annex/Import.hs
+++ b/Annex/Import.hs
@@ -982,14 +982,22 @@ importKeys remote importtreeconfig importcontent thirdpartypopulated importablec
 			ImportSubTree subdir _ ->
 				getTopFilePath subdir </> fromImportLocation loc
 
-	getcidkey cidmap db cid = liftIO $
+	getcidkey cidmap db cid = do
 		-- Avoiding querying the database when it's empty speeds up
 		-- the initial import.
-		if CIDDb.databaseIsEmpty db
+		l <- liftIO $ if CIDDb.databaseIsEmpty db
 			then getcidkeymap cidmap cid
 			else CIDDb.getContentIdentifierKeys db rs cid >>= \case
 				[] -> getcidkeymap cidmap cid
 				l -> return l
+		filterM validcidkey l
+	
+	-- Guard against a content identifier containing a git sha that is
+	-- not present in the repository. It's possible that it's not,
+	-- when git-annex forget is used.
+	validcidkey k = case keyGitSha k of
+		Just sha -> isJust <$> catObjectMetaData sha
+		Nothing -> return True
 
 	getcidkeymap cidmap cid =
 		atomically $ maybeToList . M.lookup cid <$> readTVar cidmap
diff --git a/CHANGELOG b/CHANGELOG
index cd6231b075..a8ada4f875 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -11,6 +11,8 @@ git-annex (10.20251216) UNRELEASED; urgency=medium
     on network-multicast or network-info.
   * stack.yaml: Update to lts-24.26.
   * import: Fix display of some import errors.
+  * Fix bug importing a tree from a remote after git-annex forget has been
+    used, that could result in the imported tree mising git blobs.
 
  -- Joey Hess <id@joeyh.name>  Thu, 01 Jan 2026 12:20:29 -0400
 
diff --git a/doc/bugs/s3_imported_branch_is___34__git_buggy__34____58____bad_blobs/comment_8_4d86764ebd02d547cad7eebbcd116759._comment b/doc/bugs/s3_imported_branch_is___34__git_buggy__34____58____bad_blobs/comment_8_4d86764ebd02d547cad7eebbcd116759._comment
new file mode 100644
index 0000000000..52156dd365
--- /dev/null
+++ b/doc/bugs/s3_imported_branch_is___34__git_buggy__34____58____bad_blobs/comment_8_4d86764ebd02d547cad7eebbcd116759._comment
@@ -0,0 +1,7 @@
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 8"""
+ date="2026-01-02T15:59:56Z"
+ content="""
+I've made it deal with the `git-annex forget` scenario now.
+"""]]