If you have access to the server, you can use cmtools to navigate to the package in the Content Manager database. This is not the prettiest interface, but it works.
<install_dir>\bin64\utilities\cm\CMTools\cmtools.exe
If you'd like I can walk you through it.
It will retrieve the package, not the actual model, but it gives a good starting point, especially if you published most of the model.
//Henk
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HENK CAZEMIER
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Original Message:
Sent: Wed April 03, 2019 03:55 PM
From: Anonymous Member
Subject: How to recover model.xml from Cognos 11.0.6 published package
This message was posted by a user wishing to remain anonymous
We cannot locate the Framework Manager model for an old package published to cognos 11.0.6
How can we recover the model.xml from cognos analytics?
#CognosAnalyticswithWatson