Using eUps from Standard to PE on a TATL
I've never eUpped from Y to PE before, but I've got a LHR-YYZ later this month, ticketed in Standard K, that is showing J9 C9 D9 Z9 P9 R9 O9 E9 N9 Y9 B9 M9 U9 H9 Q9 V9 W9 S9 T9 L9 K9.
I'm unsure which fare class relates to PE eUps in the way that R-space does to Business eUps. Can I even confirm an eUp to PE in advance, or is it all at the airport?
Any advice appreciated.
Thanks!