Possible to export and import all tags from a project?

[Cyentruk]

Yes, here 's my plugin, you can export and import tags to Excel, included Tag 's colors and line types.
It’s free.
5D+ SketchUp (lemonsqueezy.com)

SketchUp Extensions - 5D Auto Tag "Main Features"

It has sample tool working with tags and materials in nested groups, too.

5D+ Auto Tag - Sample Tag