How did your wagon become disordered in the first place? I tried in a test scenario to disorder a wagon by moving into Abatis terrain... didn't disorder.
In that test scenario I also had about 8 DISORDERED wagons. None of them undisordered. I remember discussing this with John Tiller years ago. Not sure how a wagon could rout OR disorder. Would be interested to hear your account as to how it happened in your game.
I have never seen a wagon disorder due to a routed unit test. They are captured if an attack captures their position ....
Enlighten us

You might send a game file to Rich at the Support email to hear what John has to say about it.
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Generalfeldmarschall Wilhelm Prinz Peters von Dennewitz
3. Husaren-Regiment, Reserve-Kavallerie, Preußischen Armee-Korps
Honarary CO of Garde-Ulanen Regiment, Garde-Grenadier Kavallerie
NWC Founding Member
For Club Games: I prefer the Single Phase mode of play. I prefer to play with the following options
OFF:
MDF, VP4LC, NRO, MTD, CMR, PR, MIM, NDM, OMR (ver 4.07)