I see that WJHG is transmitting on Vhf high band channel 7 now and has a construction permit for Uhf channel 18.
http://transition.fcc.gov/fcc-bin/tvq?call=WJHG.
And Yes if licensed for more then one channel , Tv stations can continue transmit on different channels at the same time , and many do.
The whole process of what Tv stations is/are going to transmit on what channel is , now days , ongoing.
The whole process of recored and information keeping and processing is on going and takes time for any -->'final??'<-- information to wind it's way through.
The best way to find out what the current and future situations are , is call the Tv station and ask for the engineering department.
I chat with the engineering department of Tv stations , most are more then willing to provide lot's and lot's of information.