If a poster from here continually trolled another site under a host of identities, stirring up trouble and bad feeling every time without provocation, I'd take it very seriously indeed.
And if it was a mod doing the trolling, I'd have no choice but to remove them immerdiately as it would be totally inappropriate for them to act in such a manner.
So it's rather difficult to "move on" when we've got some obsessed mod from another board who seems to be given free reign to keep on pissing about here every other week without fear of retribution from his own board.