Woodbine carryovers for intrarace bets?

[joeydb]

http://www.equibase.com/premium/eqpCarryoverCorner.cfm

$55,770 Triactor Woodbine July 29, 2011
$52,640 Exactor Woodbine July 29, 2011
$5,994 Pick 3 Woodbine July 29, 2011

Never saw this before: carryovers in Exactor, Triactor and Pick-3 wagers. Is this correct? Which race would have the increased pool for betting action on July 29th?

There was a dead heat in the 5th on Wednesday, and the equibase full chart shows "0" for the pools on the tied combinations, but it also shows a payout.

Where did the carryover come from, since all races appear to have paid a trifecta and exacta on the 27th?