The only reason a trailer manufacturer publishes a hitch/pin weight is to satisfy a weight regulation.
If the manufacturer moves things around or adds/subtracts weight from the original design they will do the easiest thing available to them, change the cargo capacity placard.
Here is a verbatim excerpt from the FMVSS about pin/hitch weight.…“On RV trailers, the sum of the GAWRs of all axles on the vehicle plus the vehicle manufacturer's recommended tongue weight must not be less than the GVWR."
Once the trailer is sold it’s weight and balance is in the hands of the owner.
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