What does merging tags do?

In each tag merge, there are two tags:

• The Current tag (the tag you began the merge from)
• The New tag (the tag that will remain when the merge is complete)

Merging will:

• Add the New tag to all articles that have the Current tag
• Remove the Current tag from all articles
• Delete the Current tag from the Tags library

Let's assume I'm using this scenario in my merge:

A sample tag merge scenario

SSL cert is the tag I began the edit and merge with.

When I complete the merge:

• The SSL cert tag won't exist anymore
• All articles that had SSL cert as a tag will have the ssl certificate tag
• Articles that had both tags will no longer have the SSL cert
• Any Manage filters that used SSL cert tag as a filter will have the tag removed. I'll need to manually update them to add the ssl certificate tag.