Ninja
Thank you for your attention.
I did not attempt to install ja-mason-source_1.0.0.zip and only include it for completeness.
I just downloaded, unzipped and uploaded the JA_Mason template again from https://www.joomlart.com/member/downloads/joomlart/joomla-templates/ja-mason
On the download page, the version is listed as 1.0.2.
The file names and version numbers of the various files are identical to those above.
I unzipped ja-mason.zip (Quickstart) and went through the Joomla install. It finished successfully with no warnings or errors.
Logged into the back end and and saw exactly what I saw in the previous install (above). See attached image 2020_03_23_22_54_55_Control_Panel_Studio_CIC_Administration.png.
List of installed and available updates is the same as the previous install (above). See attached image 2020_03_23_22_56_46_Extensions_Update_Studio_CIC_Administration.png.
As you can see, the Joomla reports version numbers for the plugins / components and template incorrectly.
Joomla indicates that all items have needed updates. Updates to the versions that should be installed when installing ja-mason.zip (Quickstart).
How can this be?
Thank you.