What happened to my traditional IRA basis

Not sure if this is the right spot to post this.  I just noticed that on the Turbo Tax IRA info worksheet, I and my wife had Tradtional IRA basis entries in 2014, 2015, and previously from contributions back before 2000.  That information was gone beginning on the worksheet for 2016 and continued to be gone in 2017 and 2018.  We have not made any deductions or contributions that would require a change or a form 8606, as I understand it since many years prior to 2014.  Where did the traditional IRA basis info go?  Basis info for my Roth IRA did not change and continues on the forms.  What does it mean that this information is no longer on the worksheet?  Did I mess up or am I getting screwed here?  Thanks.