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CONTAP-664952: SnapMirror transfer may use an incorrect reference snapshot after destination snapshot deletion

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Issue

During an asynchronous incremental SnapMirror transfer, deleting the latest common snapshot on the destination after the transfer starts can cause the transfer to use an older reference snapshot. This may produce a pedigree mismatch and unexpectedly switch the transfer from Optimized Directory mode to Logical Directory mode, potentially resulting in increased transfer latency.

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