You have tagged the edges, all geometry should remain untagged, only groups/components should be tagged.
You are also working with the backup file, the tilde in the file name tells us this.
Download the plugin cleanup 3 or default tag geometry to untag the faces and edges that could be assigned with any of the tags you created. You probably didn’t assign the tags to the geometry but if you explode a group or component nested it will automatically acquire the tag of the main group or component.
Your protocol looks correct. Just make sure the component is Selected and NOT open for editing.
A quick test to see if everything is untagged it to select everything in a component. If Entity Info shows Untagged, you’re good. If it doesn’t show Untagged, that means you have at least one tag selected (and they should all be Untagged!). Here’s what others are pointing to: