Event Date Change and Workouts progression levels

Hi there

I was in the middle of the build phase and my progression levels were being gradually increased. After updating my A event to a later date, the progression levels of the new workouts have been reduced. Is it expected?

For example

Before the date change Threshold progression level was 4.7 and the next workout was 4.9.
After changing the date, the next workout has been reduced to 4.0 and I dont see that any of the future workouts get close to the 4.7 progression level before the date change.

Thanks

Update

After completing the 4.0 threshold workout, adaptive training suggested adaptations to match the previous progression levels and now everything is ok.