Hi. Where can I find the documentation for the older version of datahub, we are currently using v0.8.41 of datahub.

It is same irrespective of datahub version - https://datahubproject.io/ . If you are looking for what has changed between different versions , you can check below lik https://datahubproject.io/docs/releases https://datahubproject.io/docs/how/updating-datahub/