Move tags from one history provider to another one

Good morning at all,
it’s possible move a big number of tags from one history provider to another one in a easy way?

I ha vethink to export tags and then import, but how ican do without create doubles tags?

Thanks

Importing won’t create doubles. Same-named tags and folder are overwritten. Though it does matter what node is highlighted in the tag tree – that’ll be the root for folders and tags named in the XML file. It’s a slight asymmetry between export and import.