Connexion v26 improves interoperability and recovery across input devices, senders and branching workflows.

• Graceful shutdown. Accepted file, database, HL7 and remote input work is completed or checkpointed through the appropriate stop path, improving recovery after a channel stops.

• File Reader recovery. Extracted inputs persist across restarts, and readers can resume from a local checkpoint left by a failed database checkpoint save.

• File and FTP interoperability. Readers honor configured encodings across input formats; malformed CSV follows the configured error policy; archive input and ZIP attachment handling are more consistent.

• File Writer correctness. Improvements cover Unicode output, time- and weekday-based file rollover, and Azure destination naming and overwrite behavior.

• HTTP interoperability. Request headers, form decoding, values containing equals signs, route matching and cancellation responses are handled more consistently.

• Kafka retries and offsets. Improvements preserve retryable batch outcomes, correct offset handling and mixed-payload ordering. Kafka's existing PreserveMessageOrder option remains available when channel ordering is required, with its single-partition throughput tradeoff.

• Branching and forwarding reliability. Ordered branch batches, retry handling and backpressure are more consistent across multiple destinations, with improved deadlock avoidance.

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