Class 31 On Class 47 Services Blackpool

Hi,
JT Benedict has said that the the Class 31 can be used on some of the shorter rake passenger services on the Blackpool route and listed 2 services. One of them being 2P55 I think but that service doesn't appear as an option on the Class 31. Can anyone advise please? Thank you.

 

2P55 can only be driven with the 40, 45 and 47. The 31 has it's own timetable

 

Thank you.