As done in CC 2019, I can save the .ai and only after finish it I can save a .pdf
Now with AI 24.2.2 I save the .ai and immediatly the .pdf but the .ai file is not saved. So the .ai and .pdf are not the same. This can cause a lot of problem becasue is I start work to AI file I'm not in last version and if I start on .pdf in low resolution I lose some elements, and reduce the quality to raster.
Please, do as CC 2019 that Illustrator block user before .pdf save.
I hope I have been of help and that my request will be taken care of.