Have you searched your entire system for all data files ending in *.tax2024? Also look in the Recycle Bin, Windows One Drive, and other backup systems it might have been saved to or moved to by the update.
This sort of thing always scares me every year. We occasionally (but not commonly) see users post a similar dilemma after an update. I've gotten in the habit that after every session working on my return in the desktop software, I save another copy of the *.taxYYYY data file on a flash drive as a "just in case" maneuver.
Also see ADDENDUM in next comment below.
