This specific case isn't ordinary voting correction, it's result of manual voting ring detection and removing all the false votes cast by those involved.
You are not part of the voting ring itself of course, but rather one of many who got affected. The votes being reversed should have never been cast in the first place, so their removal is justified and correct, and the loss of rep is inevitable side effect of this.
For more details, read the question and answers on Meta Stack Overflow, describing a previous case: Tag badge scores gained from votes are lost without change in reputation