> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 2025 12 01

<Update label="December 1, 2025" description="EIS simulations, child job status, and saved validation plot config">
  ## EIS simulations

  EIS (Electrochemical Impedance Spectroscopy) simulations now work out of the box — default double-layer capacity parameters are automatically included so you no longer need to manually specify them.

  [Find out more →](/simulate/experiment-templates#7-eis-electrochemical-impedance-spectroscopy)

  ## Child job status visibility

  Pipeline and optimization pages now display the status of individual child jobs, making it easy to monitor progress and identify which steps have completed or failed.

  ## Saved validation plot configuration

  Validation plot settings are now persisted, so you no longer need to reconfigure plots each time you revisit a validation result. This also avoids unnecessary recomputation.

  <AccordionGroup>
    <Accordion title="Studio">
      **Fixes**

      * Fixed authentication configuration and error handling; improved metric display.
      * Fixed datafit parameter bounds format (now uses `[lower, upper]`).
      * Fixed model selection in optimization, charge time display, and cycler protocol metrics.
    </Accordion>

    <Accordion title="Pipeline">
      **Improvements**

      * OCP data loading now gracefully ignores steps instead of erroring.
      * Added support for converting fitted costs back into their configuration.
      * Added current to the lumped SPMR model.

      **Fixes**

      * Fixed a bug with custom parameters in pipeline evaluation.
    </Accordion>

    <Accordion title="Protocol Simulator">
      **Fixes**

      * Fixed step label casing to match standard naming conventions.
    </Accordion>
  </AccordionGroup>
</Update>