I can only speak for Becker, but not adding them back is correct; Becker made it a point to specify that charity and home mortgage interest are NOT add-backs for AMT purposes.
The only reason why I can think you'd add back charity is if too much was deducted by mistake, but that's a wild guess.
BEC - 90 (7/19, 8 weeks)
FAR - 78 (10/19, 10 weeks)
AUD - 75 (12/19, 8 weeks)
REG - 90 (7/20, ~12 weeks, split up)
Ethics - 97 (~6 hours to go through the material & take the quiz)
Licensed in Virginia (10/20, ~1.5 weeks to process after submitting everything)