This is a Third-party Addon.
Please use carefully on data that is backed up, and help make it better by reporting any comments or problems to the author, or issues to the bug tracker
Installed as part of the CardView Addon
This is a simple tool that registered under the Tools -> Utilities menu. that allows the user to import a Gramps types export previously generated with the Type Export Tool.
It will read in the json, verify it, and then merge the types and attributes into the current types for the current database.
Related add-on experiments: