Hello Gary,
I've observed that your "Up_Config.txt" file contain a different MD5 signature than "Up_Config.txt" file from my attached sample. This means you have built and use, when testing the scenario, another "sample2.msi" file. So, you didn't use the original file from attached sample.
However, in order to investigate further this issue, please send us to support at advancedinstaller dot com or attach here all resource and project files you have used (the upgrade .aip and msi files, the upgraded .aip and msi file and the .aip of the updates configuration project and its corresponding ini configuration file)?
All the best,
Daniel