diff --git a/migrations/000018_alter_files_table_ffprobe_data.down.sql b/migrations/000018_alter_files_table_ffprobe_data.down.sql
index b489a96..7ea38d3 100644
--- a/migrations/000018_alter_files_table_ffprobe_data.down.sql
+++ b/migrations/000018_alter_files_table_ffprobe_data.down.sql
@@ -1,2 +1,2 @@
 ALTER TABLE files
-DROP IF EXISTS ffprobe;
+DROP IF EXISTS ffprobe_data;
diff --git a/migrations/000020_alter_files_table_transcode.down.sql b/migrations/000020_alter_files_table_transcode.down.sql
new file mode 100644
index 0000000..1f13efa
--- /dev/null
+++ b/migrations/000020_alter_files_table_transcode.down.sql
@@ -0,0 +1,4 @@
+ALTER TABLE tasks
+DROP IF EXISTS old_md5,
+DROP IF EXISTS old_ffprobe_data,
+DROP IF EXISTS old_size bigint;
diff --git a/migrations/000020_alter_files_table_transcode.up.sql b/migrations/000020_alter_files_table_transcode.up.sql
new file mode 100644
index 0000000..1bcebe0
--- /dev/null
+++ b/migrations/000020_alter_files_table_transcode.up.sql
@@ -0,0 +1,4 @@
+ALTER TABLE libraries
+ADD old_md5 uuid,
+ADD old_ffprobe_data JSONB,
+ADD old_size bigint;
diff --git a/server/upload.go b/server/upload.go
index 9c88a40..8fea6d5 100644
--- a/server/upload.go
+++ b/server/upload.go
@@ -175,7 +175,19 @@ func handleUpload(w http.ResponseWriter, r *http.Request) {
 		modTime := info.ModTime().UTC().Round(time.Second)
 		size := info.Size()
 
-		_, err = tx.Exec(r.Context(), "UPDATE files SET hash = $2, size = $3, mod_time = $3 WHERE id = $1", fileid, hash, size, modTime)
+		_, err = tx.Exec(r.Context(), "UPDATE files SET  old_md5 = md5, old_size = size WHERE id = $1", fileid)
+		if err != nil {
+			errorUpload(r, w, taskid, "Set File Hash", err)
+			return
+		}
+
+		_, err = tx.Exec(r.Context(), "UPDATE files SET md5 = $2, size = $3, mod_time = $3 WHERE id = $1", fileid, hash, size, modTime)
+		if err != nil {
+			errorUpload(r, w, taskid, "Set File Hash", err)
+			return
+		}
+
+		_, err = tx.Exec(r.Context(), "UPDATE files SET md5 = $2, size = $3, mod_time = $3 WHERE id = $1", fileid, hash, size, modTime)
 		if err != nil {
 			errorUpload(r, w, taskid, "Set File Hash", err)
 			return
@@ -188,6 +200,8 @@ func handleUpload(w http.ResponseWriter, r *http.Request) {
 		}
 
 		slog.InfoContext(r.Context(), "Original file Replaced with Uploaded File", "fileid", id, "dstPath", dstPath)
+	} else {
+		// TODO implement "old" fields for non replace libraries, scan also needs to use old field if it is is non replace and the file has been transcoded
 	}
 }