" he said 8606 has no bearing.."
Maybe you need a new advisor.
Your basis is prorated whenever you take funds from an IRA.
Form 8606 is required.
It will be attached by the software when you tell TurboTax you have a basis (non-deductible contributions)
IRS requires you to keep copies of all Forms 8606 until the end of your IRA.
The last filed copy is the most important.
@richardR1
