iManage Worksite DMS not working over ZPA

We are deploying ZPA and have all apps working except 1!
It is iManage Worksite (a document management system, DMS).
I was wondering if any other people have got it working?

We are actively troubleshooting with Zscaler support but the packet captures aren’t showing anything getting blocked

I don’t have iManage. But as a rough guess. What’s causing strange problems is when the app is initially called by a DNS name and returns an IP that is not on any ZPA List. The IP “Blocks” then won’t show up in ZCC Logs depending on the logs you sent. This is hard to find for support.

Did it work in Discovery mode?

We still have it in discovery mode and it’s not working. We added the IP subnets to the app segment as well as the DNS wildcard. That fixed an auth issue with Citrix Storefront but hasn’t resolved iManage issues