If a transit hold item is checked in as damaged twice in a row, the circ_history record is corrupted. That second damaged checkin will change the borrower on the Prior Circ Info to the borrower who requested the item, not the borrower who last checked it out and presumably damaged it.
This is a known bug for the Horizon 7.5.4 upgrade and may be fixed in the next upgrade.
rev. 4/2018