When attempting to set up Mac OS to open a specific app (version), and selecting 'Change All' on Get Info, it reverts to most latest app version of the same.  Any clues?

When attempting to set up Mac OS to open files with a specific app (version), through 'Change All' on Get Info, it reverts to most latest version of the same app.  Any reason why it does not allow my other version of same app to be the default one?

I have Acrobat Pro 10.1.13 and Adobe Reader 10.1.13.
If I use the Finder to get all PDFS to open with Reader instead of Pro, they do.  And vice versa, using the Change All.

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