Checkbox stays checked in post preview?

[HMBeaty]

Not sure if this would help at all, but here's a snippet of code from one of my modification that does something similar as far as keeping an option when going to a new page...

<input type="radio" name="positionapplying" value="{vb:raw pos2}"<vb:if condition="$vbgpc['positionapplying'] == $pos2"> Checked</vb:if> />&nbsp;{vb:raw pos2}