Re: Deleting conversions for good?
I have the same issue. I've just realised that the person who was managing our Adwords account automatically synced the Adwords conversions with Analytics conversions about 10 months ago. Since then I've been collecting duplicate conversions, first ones that were set up in Adwords and then the exact same ones that were set up in analytics months later.
I was initially very excited because our cost per acquisition dropped immediately after we hired them. All that CPA data in Adwords is reporting is now meaningless and because I cant go in and correct the mistake (i.e. deleting the duplicate conversion data) I've had to work it out manually.
Its a shame that Adwords is so unforgiving regarding deleting when something is actually a genuine mistake but I understand why its done this way.