The 75 drop was something IRCC did on purpose to invite all CEC applicants in the pool at that time. This has never happened before and many expect this will never happen again. Of course anything is possible and it may happen again. But don't count on it.
If draws don't resume until later this year, cut offs will be somewhere above 450.
When there is a general draw, CEC applicants qualify to be selected. However they must compete against FSW applicants who generally have higher scores. There have been now FSW or general draws in over a year and there are many people with high scores waiting. Cut offs for a general draw will likely be 480+ at first and probably won't drow below 470. Certainly they won't get anywhere close to 400.