MO QSO Party Log Dupes

Dale Holloway, K4EQ

I'm doing practice runs with MO QSP Party Contest LOG 1.7 in preparation for the contest next weekend. I've discovered that when I deliberately type in a dupe, not all the dupes come up in the "Possible Duplicate" box and the log allows me to enter the dupe. The "Any Portion" box is checked. Any suggestions as to why this is happening?

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