Roth In-plan conversion and Traditional IRA

Hi,

 

My wife is currently employed and contributes to 401k and after-tax 401k to roth in-plan conversion through her current employer for 2022. She has received a 1099-R for the roth in-plan conversion.

 

However, she also has a traditional IRA who's contribution was made in 2020 by rolling over her previous employer's 401k into IRA. Note, no contributions were made to this account in 2022.

 

I read somewhere online which mentions the pro-rata rule for backdoor roth. https://www.forbes.com/advisor/retirement/backdoor-roth-ira-pitfalls/

( See section Pro-Rata Rule and Backdoor Roth Conversions )

I don't know if anything special applies to her since we didn't do traditional backdoor roth. All roth conversion was through after-tax 401k to roth.

 

Thanks.