# Add an HDX→WUD router route to restore WUD transfers to Asset Hub

## Summary

Since the runtime upgrade on 20 October, WUD can no longer be transferred out of Hydration. Every outbound transfer fails at the withdraw step, whatever the wallet, method or amount.

## Why

Hydration's withdraw limiter values every outbound transfer of an external asset in HDX. Since the upgrade, an asset that isn't an accepted fee currency gets that value from the EMA oracle along its stored router route. WUD has no stored route and isn't in the Omnipool, so it can't be valued and the withdrawal is rejected.

## Proposal

Store a router route from HDX to WUD: HDX → aDOT through the Omnipool, aDOT → DOT, then DOT → WUD through the DOT/WUD XYK pool, the deepest WUD pool on Hydration. This gives the withdraw limiter a price for WUD. Nothing else changes: WUD does not become a fee payment asset.

The proposal was simulated on a fork of mainnet. After enactment, a WUD transfer to Asset Hub that fails today succeeds.

Track: General Admin
Preimage hash: 0x39684b4ef533cc2fbb4a6354417e87fb05abb4b2cc0932fa9054f1b7237dd52e


# Hydration WUD Transfer Fix Proposal

## What Happened
- After an upgrade on 20 October, people could no longer send WUD out of Hydration.
- Every transfer out fails, no matter which wallet or amount is used.

## Why It Broke
- Hydration needs to know how much WUD is worth in HDX before letting it leave.
- It finds this value using a stored path (a "router route") between assets.
- WUD has no stored route, so Hydration can't value it, and the transfer is blocked.

## The Fix
- The proposal stores a route from HDX to WUD: HDX → aDOT → DOT → WUD.
- This gives Hydration a way to price WUD.
- Nothing else changes; WUD does not become a fee payment asset.

## Testing
- The proposal was tested on a copy of the mainnet.
- After the change, a WUD transfer to Asset Hub that fails today succeeds.

## Details
- Track: General Admin
- Preimage hash: 0x39684b4ef533cc2fbb4a6354417e87fb05abb4b2cc0932fa9054f1b7237dd52e

assetPair

newRoute

Deciding

Submitted

DecisionDepositPlaced

DecisionStarted

general_admin

Add an HDX→WUD router route to restore WUD transfers to Asset Hub

root

whitelisted_caller

referendum_canceller

referendum_killer

treasurer

spender

tipper

omnipool_admin

economic_parameters

Origin able to dispatch a whitelisted call.

 Origin for spending very high amounts of HDX(<= 50M HDX) from the treasury as well as generally administering it.

Origin able to spend up to 2,222,222 HDX from the treasury at once.

Origin able to spend up to 50K HDX from the treasury at once.

Origin able to perform specific Omnipool-related actions.