[Tom Bunch]

This script does the iteration you're looking for. I'm not really doing anything with the results, so if you run this in Script Editor or something, the result will just be the name of the last resource.

I might imagine that some of your tasks will have a bug ticket number in custom data that you can use to match things up. Is this enough to get you started?

tell application "OmniPlan"
	tell front document
		repeat with MyTask in every task
			name of MyTask
			duration of MyTask
			custom data of MyTask
		end repeat
		repeat with MyResource in every resource
			name of MyResource
		end repeat
	end tell
end tell