regular ira to roth ira same day same year ( back door ira ) still getting taxed the return please advise

I don't know PTO, but what does your 8606 look like?

You should have a $6K nondeductible IRA contribution followed by the conversion to Roth with 100% of the basis allocated to the conversion because the FMV of all flavors of traditional IRA is now $0.

Easy-

On the 1099-R go to page 2 and look at B4 and B5 and B6

For ProConnect

Input the IRA contribution e.g. 7,000

Input the 1099R for the distribution of the excess contribution. Be sure to check the box that it is an IRA 

In this same screen CLICK 8606 See image and pay particular attention to the MINUS ONE in 2nd line

Does your taxpayer have any money in any other Trad IRA account, or this Trad IRA account that received the nondeductible contribution has any other non-basis funds? If everything looks right and there is tax, it would be common for Pro Rata tax, because someone didn't understand how backdoor will be computed. It's essentially an immediate conversion, but if there are other Trad IRA account(s), other amounts that were not yet taxed (such as earnings), then this conversion will be taxed pro rata.

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