bbCode Mention not rendering

[alfreema]

I have taken over a vb4 site recently and am trying to convert it to vb5. The learning curve is steep for me (learning both vb4 and vb5), but so far the test conversion site is going well.

When the old posts render on the new test site, they look good except all of the old MENTION's don't render, it just displays the actual mention bbCode.

When I look in the vb4 system plugins, I see that they had DragonByte's @User Tagging plugin.

It appears however that vb5 has it's own mention system using @ syntax. However, also, on my vb5 install, I went to AdminCP --> Custom BB Codes --> BB Code Manager, and found a single entry for "mention". Is that due to my conversion and it seeing the DragonByte plugin, or is that something built into vb5 by default?

Assuming it's due to the DragonByte plugin, I was thinking I don't need that plugin anymore. So then I would need a way to convert all the MENTION bbCode into @ style syntax, is that correct? Is there a plugin or script or php or sql syntax to help me with this?