diff --git a/PKHeX.Core/Legality/Verifiers/FormArgumentVerifier.cs b/PKHeX.Core/Legality/Verifiers/FormArgumentVerifier.cs
index fa3b468ae..8b377173e 100644
--- a/PKHeX.Core/Legality/Verifiers/FormArgumentVerifier.cs
+++ b/PKHeX.Core/Legality/Verifiers/FormArgumentVerifier.cs
@@ -39,6 +39,7 @@ private CheckResult VerifyFormArgument(LegalityAnalysis data, IFormArgument f)
             Furfrou when pk.Form != 0 => !IsFormArgumentDayCounterValid(f, 5, true) ? GetInvalid(FormArgumentInvalid) : GetValid(FormArgumentValid),
             Hoopa when pk.Form == 1 => data.Info.EvoChainsAllGens switch
             {
+                { HasVisitedZA:   true } when arg == 0 => GetValid(FormArgumentValid), // Value not applied on form change, and reset when reverted.
                 { HasVisitedGen9: true } when arg == 0 => GetValid(FormArgumentValid), // Value not applied on form change, and reset when reverted.
                 { HasVisitedGen6: true } when IsFormArgumentDayCounterValid(f, 3) => GetValid(FormArgumentValid), // 0-3 via OR/AS
                 { HasVisitedGen7: true } when IsFormArgumentDayCounterValid(f, 3) && f.FormArgumentRemain != 0 => GetValid(FormArgumentValid), // 1-3 via Gen7