From the Nav Canada website:
After discussion with stakeholders, it has been decided to temporarily rescind, effective 0000Z May 19th, all SID/STAR phraseology changes made on April 27th. Today’s move was made out of concern over altitude deviations we were seeing in the system and the unforeseen large increase in workload as a result. We are continuing to communicate with airlines, aircraft operators and our employees as we revert back to the phraseology rules that were in place prior to this change.
The following NOTAM will go into effect nationwide regarding all crossing restrictions on IFR STARS:
170337 CZWG WINNIPEG FIR
CZWG THE FOLLOWING APPLIES TO ALL STAR PROC: WHEN A LOWER ALT IS
ISSUED, PILOTS SHALL DESCEND ON THE STAR PROFILE TO THE ASSIGNED
ALT. CHARTED RESTRICTIONS ABV THE ASSIGNED ALT REMAIN MANDATORY.
1705191720 TIL APRX 1710120901