Assuming all of the pieces for the Umbrella install are there, Secure Endpoint will try to uninstall the old roaming client.
Found this in a redid post in r/macsysadmin
"I found out that Secure Client will try uninstall Umbrella Roaming Client IF the original uninstaller app/binary are intact ( in /Library/Application Support or /Applications, I think). But we REMOVED these tools to prevent users from removing Umbrella. Self-inflicted) So my workaround: My custom Secure Client installer pkg now includes the old Umbrella uninstaller binary and I run it via a postinstall script from my package in Composer. (It's an extra step but critical to ensure the old Umbrella is nuked)."
