Frozen tracks not adjusted for tempo change

I am using 7.5.20 on a Mac in case that makes a difference. I had most of the channels frozen in a project when I slowed the tempo for the introduction but not the rest of the song. The frozen instrument tracks that follow, and I suppose audio tracks as well, now start too soon. If I unfreeze (thaw?) and freeze the tracks they are ok, but is this really the way things should work? I know the frozen track is an audio recording but isn’t it supposed to work just like the track that it is standing in for? Is there some way to get the timing right without unfreezing? I probably will have unfrozen and refrozen all the tracks before anybody responds but in case I get lazy or distracted, it would be good to know an easier way to do this.