When importing from vBulletin v4 to Discourse, the following markup gets converted incorrectly, resulting in a rather unsightly post in Discourse:
vBulletin post source code (which renders correctly for us in VB
[LIST]
[*][URL="https://link.one"]TITLE OF LINK ONE[/URL] (more info here)
[*][URL="https://link.two"]TITLE OF LINK TWO[/URL] (more info here)
[*][URL="https://link.three"]TITLE OF LINK THREE[/URL] (more info here)
[/LIST]
Becomes this in Discourse:
[ul]
[li][TITLE OF LINK ONE](https://link.one) (more info here) [/li][li][TITLE OF LINK TWO](https://link.two) (more info here)[/li][li][TITLE OF LINK THREE](https://link.three) (more info here) [/li][/ul]