I am experiencing same issue with TT for 2024 taxes on Form 1041.  Form 1041, Sched B, line 3 is supposed to pick up data from Sched D, line 19, column 1.  It is not picking up that value, regardless of what values I use to try and force a change.   It just uses Sched D, line 19, column 3 = line 16.  This then has an immediate impact on all downstream calcs.  Any help is appreciated.