we don't care about timestamp in snapshot

x/auth/ante/unorderedtx/manager.go

@@ -164,13 +164,9 @@ func (m *Manager) exportSnapshot(height uint64, snapshotWriter func([]byte) erro
 	w := bufio.NewWriter(&buf)
 
 	keys := slices.SortedFunc(maps.Keys(m.txHashes), func(i, j TxHash) int { return bytes.Compare(i[:], j[:]) })
-	timestamp := time.Unix(int64(height), 0)
 	for _, txHash := range keys {
 		timeoutTime := m.txHashes[txHash]
-		if timestamp.After(timeoutTime) {
-			// skip expired txs that have yet to be purged
-			continue
-		}
+
 		// right now we dont have access block time at this flow, so we would just include the expired txs
 		// and let it be purge during purge loop
 		chunk := unorderedTxToBytes(txHash, uint64(timeoutTime.Unix()))

x/auth/ante/unorderedtx/snapshotter.go

@@ -81,8 +81,9 @@ func (s *Snapshotter) restore(height uint64, payloadReader snapshot.ExtensionPay
 
 		timestamp := binary.BigEndian.Uint64(payload[i+txHashSize : i+chunkSize])
 
-		// purge any expired txs
-		if timestamp != 0 && timestamp > height {
+		// add all txs, we don't care at this point if they are expired,
+		// we'll let the purge loop handle that
+		if timestamp != 0 {
 			s.m.Add(txHash, time.Unix(int64(timestamp), 0))
 		}