It's all too easy to cause TurboTax to silently delete basis carried in from the previous year by inadvertently answering No when TurboTax asks if the individual made any nondeductible traditional IRA contributions for a prior year. When you correct the amount back to the amount that was originally carried in, TurboTax inappropriately sees this as a change to the basis from the previous year.
"is it sufficient to state that this is the amount on my spouse's 2022 Form 8606 Line 14?"
Probably.
