Retirement tax questions

Thx. After entering my 1099R info for my inherited IRA RMD, TT asks: ANY NON DEDUCTIBLE CONTRIBUTIONS TO ROBERTS IRA? Let us know if Robert made and kept track of any non deductible contributions to Roberts Traditional IRA from 2017 or prior years. (This is not common.)

While I didn't in 2018 I have in 2017 and in prior years. I report this basis to this question.

Clearly, TT is mingling my inherited IRA with my traditional IRA info and it's showing on form 8606. Lines 2-6 shows correct info for my traditional IRA and value. All correct. But Lines 7-15a show inherited IRA info.

I've been taking the inherited RMD for about 5 years. Every year I fill out this portion and have never had this problem. Why it's mingling now I just don't know.