I have an idea I think will work.... add a hidden element to the page directly before or after the checkbox in the same cell:
<input name="hid_<?php echo $RepeatSelectionCounter_1; ?>" type="hidden" value="1"/>
and update the line of code:
$WA_loopedFields = array("stateExperID");
$WA_loopedFields = array("hid");
I think the problem has to do with only having a checkbox in the repeated form. Adding and referencing the hidden form element it would appear should fix the problem.