Clojurians Log v2

Can muuntaja instance be overridden at the route level? Specifically, I want to change key serialization for the response body for legacy end-points as we made a mistake but need to maintain the old behavior until the legacy end-points are retired. In my router configuration I have the following:

{:data {:muuntaja m/instance}}

In my route data I have this:

["/legacy" {:data {:muuntaja (m/create ...)}}]

It does not seem to be working as (I) expected as the response data is serialized using the muuntaja instance from the router configuration, not the “override” instance on the route itself.