I can't comment on the tax history. I never bother to look at it since it not relevant to preparing the current-year tax return.
The Keogh, SEP and SIMPLE Contribution Worksheet for self-employed retirement contributions works fine as far as I can tell. If it doesn't show a deduction for a self-employed retirement contribution, that seems to imply that there was no net profit from self-employment on Schedule C or the contribution was entered incorrectly. Examine this worksheet for the answer. The self-employed retirement deduction cannot reduce taxable income below zero and will not reduce Other taxes from Schedule 2.
