Form 8606 is missing from several of my tax returns. The way Turbo asks the questions it is too easy not to answer the way it is supposed to be done. Please contact me.

Why do you think it is missing?      What did you enter that requires an 8606?

 An 8606 is automatically created when:

1) You make a new non-deductible Traditional IRA contribution.
2) You take a distribution from a IRA that has a after-tax "basis".
3) You make a conversion of a retirement account to a Roth IRA

If none of those occurred, then the last filed 8606 remains in effect

There are some circumstances when a 8606 must be files for other reasons and might require filing a stand-alone 8606.

https://ttlc.intuit.com/questions/1899503-what-is-form-8606-nondeductible-iras-used-for