Hi Dominic,
Thank you for creating this post. I believe this same feature request was submitted in the post below:
https://subject7.zendesk.com/hc/en-us/community/posts/360033648293-Find-Replace-Feature
Could you please confirm which specific items you are looking to find and replace? For example, is it a simple change like Value from a Fill step in a test case?
Regards,
Subject7 Team