Is there an easy way to migrate or copy existing meta keywords for articles so that they become article tags, in Joomla 3.6?
The situation is: Joomla, until a few versions ago, didn't have a tag system. Before that, we used the meta keywords instead, and modules like "Related articles" also used the meta keywords to identify related articles. Now, the current version of the related articles module uses the tags instead of the meta keywords, which essentially means it can't process any of the older articles. Also it's more beautiful/correct to use tags instead of meta keywords.
So I would like some automatic way to process a few hundred articles, read the existing meta keywords and import them as tags.
I had a look at the database structure to see if some SQL scripting can do that, but the tag system uses relational fields and while I could probably write a script it would take a fair amount of fiddling and testing.
I'd think more people have this issue and somebody might have developed a plugin or a command line script, but I can't find anything helpful.