John,

There is no timestamps in a bitmaps. 

After the merge any tracks marked as changed in the merged bitmap will be
sent from P-VOL to S-VOL.

Ron

> Ron,
> 
> I assume that if both bitmaps indicated that the same track was changed
> that the latest timestamp wins.
> 
> If I remember correctly, the timestamps are sourced via the MVS I/O
> (typically from a SYSPLEX timer). Since the primary and secondary may not
> be attached to the same time source, don't you see this as being a little
> risky!
> 
> John
> 

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