I'm having a difficult time correlating DL online fares with KVS data. Specifically, I have purchased several H-UP fares but cannot find the same fare with KVS.

For Example (by searching/purchasing from DL.com):

18 JUN FLL-ATL
22 JUN ATL-FLL

Selected REFUNDABLE and H. Fare paid was $725 which I then -UP'd by calling DL reservations. No additional charges.

If you select the same itinerary, buy only select H and NOT refundable, the fare is $699. When you call to -UP that fare, there is a charge of $25.

I cannot find either the $725 nor the $699 fare using KVS.

I'd like to be able to search KVS for other routes fishing for -UP fares. Surprisingly, the full Y fare, over $1,000, on this route is not upgradeable?!?!

Your assistance is appreciated!