wala naman pong issue kung nag submit po kayo ng mag kaibang pp sa mpnp stage (your old pp na-discolored pic ) at ngaun sa cic(newly issued passport) as long as na same pa rin ung biometric details like ung last name nyo. ( unless you use 2 different pp sa cic stage...i guess need po ng letter esp. sa ppr)
super acceptable po na using a new passport due to:......
a) sa ppr...requirement po ng canadian embassy na may at least one year valid po yung pp for visa stamping...... and in case nasa MB (or winterpeg) na po kau....
b)once (or twice a year?) lang daw napunta representative ng phil consul general ( from toronto) para mag offer pp renewal sa winnipeg.
all the best of luck. God bless