Hi Julie

Thanks for the response. There were initially some manually scheduled tasks so I advised the PM to fix those first. We then re-ran the XML option but it is still throwing out some dates.
One option I am considering is to export all task data to Excel and then re-importing it to Project to see if that r4esolves the issue. Not tried it yet - what do you think? There are no task calendars all tasks are running off the Standard calendar.
I have done the XML option on a couple of other large plans with no issue at all!!!
Thanks
Tony