Have you tried Edit>Migrate previous local settings?
Yes. Does that mean my synched KBSC should show up in the drop down list?
Sync setting feature of InDesign is useful to sync your setting (KBSC, PDF preset, menuset, glyphset) across two different system.
On same machine for migrating the older version settings to the newer version you should use Edit>Migrate previous local settings as Bob mentioned above.
If migration happens successful then your older version KBSC will show up in newer version on same machine.
Thank you for that. But the difference between Sync Settings and migrating is VERY confusing. Adobe should make it less confusing. Thankfully, Steve Werner wrote a great article explaining the difference. http://indesignsecrets.com/migrating-vs-syncing-settings-indesign-cc-2014.php.
If Adobe is going to have two very related but not identical features, that appear they should do the same thing (but don't) the buttons for said features should be located next to each other in the UI, instead of hiding a Sync icon in the lower left, another Sync button in the Preferences dialog box, and a Migrate command in the menus.
Agreed. The real problem is that the default is to uninstall the old versions.
Doing that makes it nearly impossible to retrieve the old settings.