Camilla and I tested going to Observing with no squeezing following the instructions on the Observation With or Without Squeezing Wiki. There were a few edits to the wiki so I'm glad we got the chance to test it. We purposefully did not change the state of H1:GRD-IFO_OK (ie. we didn't actually go into observing), but all nodes reported OK other than SDFs, which are simple to accept in this state.

Going to or from this odd IFO configuration is still not super straight forward. It requires editing the definition of the nominal states of 5 guardian nodes in 5 separate python files, then taking the ISC_LOCK node to manual, requesting the INJECT_SQUEEZING state, then manual back to the NOMINAL_LOW_NOISE state. I can't think of an easy way to make it simpler than this though, and this situation should rarely come up.