A retirement reconversion is an act of converting a previously recharacterized contribution.
This is may sound a bit confusing, so just do your best to follow…
If a client converts a Traditional IRA or Simple IRA portion into a Roth IRA, but later changes their mind, then they may recharacterize their retirement account back to a Traditional/Simple IRA.
If a client then decides they would like to reconvert the funds to a Roth, they may do so, but they must wait until the latter of 30-days after the recharacterization or January 1st of the following year.
For example, if you were to convert in May and recharacterize in October, you could choose to reconvert after January 1st. However, if you waited until December 15th to recharacterize you would have to wait 30 days to reconvert because 30 days would be later than January 1st of the following tax year.
If you have questions, be sure to speak with a CPA or tax professional.