To fit Paul I’s suggestion about classifying a payment as something other than a contribution:
The plan’s administrator might want its lawyer’s advice about whether the amounts to be restored to participant accounts might be a restorative payment.
26 C.F.R. § 1.415(c)-1(b)(2)(ii)(C) https://www.ecfr.gov/current/title-26/part-1/section-1.415(c)-1#p-1.415(c)-1(b)(2)(ii)(C).
That classification might fit if the plan’s administrator arguably breached ERISA § 102 or § 404(a)(1) in communicating (or failing to communicate) the plan’s provisions, or arguably breached a fiduciary responsibility in instructing the service provider.
A fiduciary’s breach need not be proven or conceded; it is enough that there is “a reasonable risk of liability[.]”
If a restorative payment meets the reasonable-risk condition, is allocated to restore the harm that follows from the fiduciary’s arguable breach, and meets further conditions the rule specifies, it is not an annual addition. Thus, it does not count in measuring a § 415(c) limit. Likewise, it might not count in a coverage or nondiscrimination test to the extent that the test looks to annual additions. Because the participant does not control a restorative payment, it should not be treated as an elective deferral, and so should not count for a § 402(g) limit, or for a coverage or nondiscrimination test that looks to elective deferrals.
This is not accounting, tax, or legal advice to anyone.