You can download this Hotfix from TIBCO Support Portal (https://support.tibco.com).  You will need to provide your TIBCO Support Portal credentials.

Once logged in you can download the Hotfix by selecting the “Downloads” -> “Hotfixes” option, then navigate to /AvailableDownloads/MasheryLocal/4.4.3/hotfix-01 to download the Hotfix.

Alternatively, you can use the direct portal link to download Hotfix-01
https://support.tibco.com/s/hotfixes?id=a014z00000zSxquAAC

The Hotfix contains a utility to help migrate and sync existing tokens from Local Edition 4.4.3 to Local Edition 5.5.x. This does not include changes or addition of any new API management features in the 4.4.3 version

This release is cumulative and may be applied over any other Mashery Local 4.4.2 release.