Hierarchy export memory fix

[ArGr1]

What have I made? 👩‍💻

Related to AB#232884

How can you best review this? 🧐

Run johan castberg/bacalhau builds and verify memory usage and that they do not run out of memory whilst running on agents with sufficient memory.

Screenshot or Profiling data 🤳

Did I remember everything checklist?

• I made some awesome changes! 😎
• I left the code in a better state than when I started working on it ✨
• I wrote unit and/or integration tests 👾
• I have considered any security implications, and requested review of them explicitly 🔐
• I verified that it checks the acceptance criteria. 📜
• I have tested this change in the Echo DEV environment, or requested someone to test it for me 🚀
• I updated the documentation/readme 📚
• I made the PR title descriptive and human-readable 👨‍👩‍👦‍👦
• Existing unreported issues I found but could not fix was added as a new Issues 🚧