If you have old calibration history and want to be able to track drift, the possibility to some extent predict drift and adjust for drift out of later measurements you do not want to have it adjusted.
If you have no calibration history, or do not care about being able to track drift, you want also to have it adjusted.
But if no physical adjustments will be done, one can track drift with or without adjustments because only the equipment software will be adjusted.
For example, we are tracking the 10V readings considering no adjustments:
1st cal: reference
2nd cal: reference + 5ppm
3th cal: reference + 7ppm
4th cal: reference + 8ppm
5th cal: reference + 8ppm
Now if that same multimeter had got adjustments:
1st cal: reference
2nd cal: ajusted -5ppm => now reading same as reference again
3th cal: adjusted -2ppm => now reading same as reference again
4th cal: adjusted -1ppm => now reading same as reference again
5th cal: no adjustments needed - already reading same as reference
In both cases it is trivial to track the drift.
What am I not getting?