CN is running some trains over the former NBEC / CFMG properties, rather than the normal Edmundston-Moncton (NTR) route. They are doing this because the engineers are not on strike on the northern route, since they are in a different union that is not on strike.
As of 5 PM Atlantic on Sunday, this appears to be what was happening in the Maritimes:
CN 308 (very long) in Campbellton, departing 21:00 or 22:00
CN 121 departed Campbellton 16:00
CN 305 arriving in Campbellton in the evening
CN 120 used the NTR route this morning
CN 308 (another one) should be next eastbound through Campbellton
CN 408 arrived Dartmouth just after noon
CN 407 departing Dartmouth for Moncton 16:50
The challenge with using the northern (ICR) route is that speeds are slower and there are no long passing sidings. Meets between long freights have to take place in yards. On the plus side (for CN) they use actual engineers rather than CN managers to drive the trains.
VIA is running on time in the Maritimes at present.