Hi George,
I Originally thought that, but support says Migrator Version should not matter as they are backwards compatible.
The underlying issue was that in the registry HKLM\Software\Wow6432Node\InteractiveIntelligence\EIC\DirectoryServices\Root\CustomerSite\Production the Key VersionMajor was stating we were running 15, meaning 2015 when in fact we really were 16. Once we adjusted that Key to say 16 migrator ran successfully.
Thank you,
Scott