My first shot at pulling back missing entries did catch all of the missing ones, but also found some which were not missing. After SK examined the results, we now theorize that where the entry had an <infl> element with an @mode attribute, then it was retrieved during the original operation; so these entries can now be excluded from our set. I've now tweaked the XSLT and run a second operation, which brought back 1906 entries, as opposed to nearly 3,000 from yesterday's run. SK will examine these and see if we've now hit the nail exactly on the head.