Hi @Mark.Edgeller,
I do empathize with your situation as we are in the same boat. I am sure there are many Blue Prism converts, who cannot understand why this cannot be done. It is a deafult function in Blue Prism.
Here is a newer feature request post, voting there would help in bringing this up the feedback loop.
Update Transaction Item while In Progress - Feedback / Orchestrator - UiPath Community Forum
There are two main features which would make our job easier one being discussed in this thread
and another being : Why is there STILL no way to delete an In Progress Queue Item?! - Help - UiPath Community Forum