en January is not after itself Z16650
en Test case

ᨨᨷᩢ᩠ᨷᨠᩯ᩶ᩃᩪᩁᩈᩩᨯᨾᩮᩬᩥ᩵ᩋ ᪁᪇:᪄᪆, ᪃ ᨾᩥᨳᩩᨶᩣᨿᩫ᩠ᨶ ᪂᪀᪂᪄

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@@ ᨷᩢ᩠ᨶᨴᩢ᩠ᨯᨴᩦ᩵ ᪂᪅: / ᨷᩢ᩠ᨶᨴᩢ᩠ᨯᨴᩦ᩵ ᪂᪅: @@
             "Z844K2": {
                 "Z1K1": "Z40",
-                "Z40K1": "Z41"
+                "Z40K1": "Z42"
             }
         }