Since this town is located in Morris County, and their frequencies fall very close to MC Trunk frequencies, any chance they may have switched to the Morris County P25 Trunk System
?
According to their license, they have 3 repeater frequencies under the same call sign. Perhaps they switched their services around to use a different repeater. Also you may want to check 479.6000 is licensed as a mobile frequency at 40W output. Perhaps this has become a 4th base / simplex channel or even now "repeaterized" despite what the license says. Another choice again despite what the license has as an emission NFM 11K2F3E, could the have change emission to P25
?