Before launching the authoritative DAO back in July 2021, we did a public test on Rinkeby. People used the DAO dashboard to create and vote on proposals that sent ETH, tokens and changed DAO parameters (for example the staking target).
There hasn’t been any proposals on mainnet that sent ETH. I figured that we will need that soon due to the treasury diversification proposal so I sent 0.001 ETH to the secondary agent and tried to create a proposal that sends it back to me. However, I found out that some newly added validation rules unintentionally disabled transferring ETH with no calldata (so I couldn’t even create the proposal).
The fix for that is now in production (which is why api3.eth and dao.api3.org now point to a new deployment) and I created the proposal here. I recommend waiting for this to be executed successfully before transferring the procured ETH to the second agent.